diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8975d7c9..4ef99629 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 - Add -BinstalldirChooser=true / -Bcopyright=string / -Bvendor=string / -Bwin.menuGroup=string to Package class to support Windows packaging
 - Configure 'logging' to generate log files on Windows/Linux/Mac and syslog where available
 - Configure 'logging' to do async buffered logging via a thread to avoid impacting app performance with logging
+- Update all logger calls to be lazy blocks
 
 ### 0.4.1
 
diff --git a/TODO.md b/TODO.md
index c38b00c2..b3ff191e 100644
--- a/TODO.md
+++ b/TODO.md
@@ -6,7 +6,8 @@ Here is a list of tasks to do (moved to [CHANGELOG.md](CHANGELOG.md) once done).
 
 ### 0.5.0
 
-- Update all logger calls to be lazy blocks
+- Consider making "DSL keyword cannot be handled" errors at level :warn
+- Lower logging level for unimportant debug info
 - Upgrade to glimmer 0.10.0 to take advantage of the new logging library
 
 ### 0.6.0
diff --git a/lib/glimmer/dsl/swt/custom_widget_expression.rb b/lib/glimmer/dsl/swt/custom_widget_expression.rb
index 48bab03f..880a644b 100644
--- a/lib/glimmer/dsl/swt/custom_widget_expression.rb
+++ b/lib/glimmer/dsl/swt/custom_widget_expression.rb
@@ -1,3 +1,4 @@
+
 require 'glimmer'
 require 'glimmer/dsl/expression'
 require 'glimmer/dsl/parent_expression'
diff --git a/lib/glimmer/dsl/swt/tab_item_expression.rb b/lib/glimmer/dsl/swt/tab_item_expression.rb
index 483f9aab..e5a78606 100644
--- a/lib/glimmer/dsl/swt/tab_item_expression.rb
+++ b/lib/glimmer/dsl/swt/tab_item_expression.rb
@@ -18,7 +18,7 @@ def can_interpret?(parent, keyword, *args, &block)
             if parent.swt_widget.is_a?(TabFolder)
               return true
             else
-              Glimmer::Config.logger&.error "tab_item widget may only be used directly under a tab_folder widget!"
+              Glimmer::Config.logger.error {"tab_item widget may only be used directly under a tab_folder widget!"}
             end
           end
           false
diff --git a/lib/glimmer/dsl/swt/widget_listener_expression.rb b/lib/glimmer/dsl/swt/widget_listener_expression.rb
index 0bb57f37..b2515ae3 100644
--- a/lib/glimmer/dsl/swt/widget_listener_expression.rb
+++ b/lib/glimmer/dsl/swt/widget_listener_expression.rb
@@ -8,17 +8,17 @@ class WidgetListenerExpression < Expression
         include_package 'org.eclipse.swt.widgets'
   
         def can_interpret?(parent, keyword, *args, &block)
-          Glimmer::Config.logger&.debug "keyword starts with on_: #{keyword.start_with?('on_')}"
+          Glimmer::Config.logger.debug {"keyword starts with on_: #{keyword.start_with?('on_')}"}
           return false unless keyword.start_with?('on_')
           widget_or_display_parentage = parent.respond_to?(:swt_widget) || parent.is_a?(Glimmer::SWT::DisplayProxy)
-          Glimmer::Config.logger&.debug "parent is a widget or display: #{widget_or_display_parentage}"
+          Glimmer::Config.logger.debug {"parent is a widget or display: #{widget_or_display_parentage}"}
           return false unless widget_or_display_parentage
-          Glimmer::Config.logger&.debug "block exists?: #{!block.nil?}"
+          Glimmer::Config.logger.debug {"block exists?: #{!block.nil?}"}
           raise Glimmer::Error, "Listener is missing block for keyword: #{keyword}" unless block_given?
-          Glimmer::Config.logger&.debug "args are empty?: #{args.empty?}"
+          Glimmer::Config.logger.debug {"args are empty?: #{args.empty?}"}
           raise Glimmer::Error, "Invalid listener arguments for keyword: #{keyword}(#{args})" unless args.empty?
           result = parent.can_handle_observation_request?(keyword)
-          Glimmer::Config.logger&.debug "can add listener? #{result}"
+          Glimmer::Config.logger.debug {"can add listener? #{result}"}
           raise Glimmer::Error, "Invalid listener keyword: #{keyword}" unless result
           true
         end
diff --git a/lib/glimmer/swt/color_proxy.rb b/lib/glimmer/swt/color_proxy.rb
index a59bddb8..0278d884 100644
--- a/lib/glimmer/swt/color_proxy.rb
+++ b/lib/glimmer/swt/color_proxy.rb
@@ -52,7 +52,7 @@ def swt_color
       def method_missing(method, *args, &block)
         swt_color.send(method, *args, &block)
       rescue => e
-        Glimmer::Config.logger&.debug "Neither ColorProxy nor #{swt_color.class.name} can handle the method ##{method}"
+        Glimmer::Config.logger.debug {"Neither ColorProxy nor #{swt_color.class.name} can handle the method ##{method}"}
         super
       end
       
diff --git a/lib/glimmer/swt/display_proxy.rb b/lib/glimmer/swt/display_proxy.rb
index ade5f8fe..3748353e 100644
--- a/lib/glimmer/swt/display_proxy.rb
+++ b/lib/glimmer/swt/display_proxy.rb
@@ -39,7 +39,7 @@ def initialize(*args)
       def method_missing(method, *args, &block)
         swt_display.send(method, *args, &block)
       rescue => e
-        Glimmer::Config.logger&.debug "Neither DisplayProxy nor #{swt_display.class.name} can handle the method ##{method}"
+        Glimmer::Config.logger.debug {"Neither DisplayProxy nor #{swt_display.class.name} can handle the method ##{method}"}
         super
       end
       
diff --git a/lib/glimmer/swt/layout_data_proxy.rb b/lib/glimmer/swt/layout_data_proxy.rb
index 1f184c62..f372ddb2 100644
--- a/lib/glimmer/swt/layout_data_proxy.rb
+++ b/lib/glimmer/swt/layout_data_proxy.rb
@@ -31,7 +31,7 @@ def initialize(widget_proxy, args)
         begin
           @swt_layout_data = swt_layout_data_class.new(*args)
         rescue => e
-          Glimmer::Config.logger&.debug "#{e.message}\n#{e.backtrace.join("\n")}"
+          Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"}
           @swt_layout_data = args.first if args.count == 1
         end
         @widget_proxy.swt_widget.setLayoutData(@swt_layout_data)
diff --git a/lib/glimmer/swt/layout_proxy.rb b/lib/glimmer/swt/layout_proxy.rb
index a105db53..61fe2277 100644
--- a/lib/glimmer/swt/layout_proxy.rb
+++ b/lib/glimmer/swt/layout_proxy.rb
@@ -34,8 +34,8 @@ def swt_layout_class_for(underscored_layout_name)
           end
           swt_layout_class
         rescue => e
-          Glimmer::Config.logger&.debug e.message
-          # Glimmer::Config.logger&.debug "#{e.message}\n#{e.backtrace.join("\n")}"
+          Glimmer::Config.logger.debug {e.message}
+          # Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"}
           raise e
         end
       end
diff --git a/lib/glimmer/swt/shell_proxy.rb b/lib/glimmer/swt/shell_proxy.rb
index 9aa7138f..fcb73df0 100644
--- a/lib/glimmer/swt/shell_proxy.rb
+++ b/lib/glimmer/swt/shell_proxy.rb
@@ -134,7 +134,7 @@ def start_event_loop
           begin
             @display.sleep unless @display.readAndDispatch
           rescue => e
-            Glimmer::Config.logger&.debug e.full_message          
+            Glimmer::Config.logger.debug {e.full_message}
           end
         end
       end
diff --git a/lib/glimmer/swt/style_constantizable.rb b/lib/glimmer/swt/style_constantizable.rb
index 42e790f9..9832d05a 100644
--- a/lib/glimmer/swt/style_constantizable.rb
+++ b/lib/glimmer/swt/style_constantizable.rb
@@ -61,12 +61,12 @@ def constant(symbol)
           negative ? ~bit_value : bit_value
         rescue => e
           begin
-#             Glimmer::Config.logger&.debug(e.full_message)
+#             Glimmer::Config.logger.debug {e.full_message}
             alternative_swt_constant_symbol = constant_source_class.constants.find {|c| c.to_s.upcase == swt_constant_symbol.to_s.upcase}
             bit_value = constant_source_class.const_get(alternative_swt_constant_symbol)
             negative ? ~bit_value : bit_value
           rescue => e
-#             Glimmer::Config.logger&.debug(e.full_message)
+#             Glimmer::Config.logger.debug {e.full_message}
             bit_value = extra_styles[swt_constant_symbol]
             if bit_value
               negative ? ~bit_value : bit_value
diff --git a/lib/glimmer/swt/table_proxy.rb b/lib/glimmer/swt/table_proxy.rb
index c6e8944b..84785503 100644
--- a/lib/glimmer/swt/table_proxy.rb
+++ b/lib/glimmer/swt/table_proxy.rb
@@ -297,7 +297,7 @@ def edit_table_item(table_item, column_index, before_write: nil, after_write: ni
         }
         @table_editor.setEditor(@table_editor_widget_proxy.swt_widget, table_item, column_index)
       rescue => e
-        Glimmer::Config.logger&.error e.full_message
+        Glimmer::Config.logger.error {e.full_message}
         raise e
       end
       
diff --git a/lib/glimmer/swt/widget_proxy.rb b/lib/glimmer/swt/widget_proxy.rb
index 67d7e5da..da4c944d 100644
--- a/lib/glimmer/swt/widget_proxy.rb
+++ b/lib/glimmer/swt/widget_proxy.rb
@@ -268,17 +268,17 @@ def self.swt_widget_class_for(underscored_widget_name)
         swt_widget_name = underscored_widget_name.camelcase(:upper)
         swt_widget_class = eval(swt_widget_name)
         unless swt_widget_class.ancestors.include?(org.eclipse.swt.widgets.Widget)
-          Glimmer::Config.logger&.debug("Class #{swt_widget_class} matching #{underscored_widget_name} is not a subclass of org.eclipse.swt.widgets.Widget")
+          Glimmer::Config.logger.debug {"Class #{swt_widget_class} matching #{underscored_widget_name} is not a subclass of org.eclipse.swt.widgets.Widget"}
           return nil
         end
         swt_widget_class
       rescue SyntaxError, NameError => e
-        Glimmer::Config.logger&.debug e.full_message
-        # Glimmer::Config.logger&.debug("#{e.message}\n#{e.backtrace.join("\n")}")
+        Glimmer::Config.logger.debug {e.full_message}
+        # Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"}
         nil
       rescue => e
-        Glimmer::Config.logger&.debug e.full_message
-        # Glimmer::Config.logger&.debug("#{e.message}\n#{e.backtrace.join("\n")}")
+        Glimmer::Config.logger.debug {e.full_message}
+        # Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"}
         nil
       end
 
@@ -359,7 +359,7 @@ def can_handle_drag_observation_request?(observation_request)
           end
         end
       rescue => e
-        Glimmer::Config.logger&.debug(e.full_message)
+        Glimmer::Config.logger.debug {e.full_message}
         false        
       end
 
@@ -399,7 +399,7 @@ def content(&block)
       def method_missing(method, *args, &block)
         swt_widget.send(method, *args, &block)
       rescue => e
-        Glimmer::Config.logger&.debug "Neither WidgetProxy nor #{swt_widget.class.name} can handle the method ##{method}"
+        Glimmer::Config.logger.debug {"Neither WidgetProxy nor #{swt_widget.class.name} can handle the method ##{method}"}
         super
       end
       
diff --git a/lib/glimmer/ui/custom_widget.rb b/lib/glimmer/ui/custom_widget.rb
index d480ca4c..423dfa09 100644
--- a/lib/glimmer/ui/custom_widget.rb
+++ b/lib/glimmer/ui/custom_widget.rb
@@ -36,15 +36,15 @@ def for(underscored_custom_widget_name)
                 return constant if constant.ancestors.include?(Glimmer::UI::CustomWidget)
                 constant
               rescue => e
-                # Glimmer::Config.logger&.debug "#{e.message}\n#{e.backtrace.join("\n")}"
+                # Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"}
                 result
               end
             end
           end
           raise "#{underscored_custom_widget_name} has no custom widget class!"
         rescue => e
-          Glimmer::Config.logger&.debug e.message
-          Glimmer::Config.logger&.debug "#{e.message}\n#{e.backtrace.join("\n")}"
+          Glimmer::Config.logger.debug {e.message}
+          Glimmer::Config.logger.debug {"#{e.message}\n#{e.backtrace.join("\n")}"}
           nil
         end