diff --git a/lib/facter/memory.rb b/lib/facter/memory.rb
index 405d61ed92..24678e1ec2 100644
--- a/lib/facter/memory.rb
+++ b/lib/facter/memory.rb
@@ -17,11 +17,15 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston MA  02110-1301 USA
 
 module Facter::Memory
+    require 'thread'
+
     def self.meminfo_number(tag)
         memsize = ""
-        File.readlines("/proc/meminfo").each do |l|
-            if l =~ /^#{tag}:\s+(\d+)\s+(\S+)/
-                memsize = scale_number($1.to_f, $2)
+        Thread::exclusive do
+            File.readlines("/proc/meminfo").each do |l|
+                if l =~ /^#{tag}:\s+(\d+)\s+(\S+)/
+                    memsize = scale_number($1.to_f, $2)
+                end
             end
         end
             
diff --git a/lib/facter/processor.rb b/lib/facter/processor.rb
index f353e71204..812bd99838 100644
--- a/lib/facter/processor.rb
+++ b/lib/facter/processor.rb
@@ -18,15 +18,19 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston MA  02110-1301 USA
 #
 
+require 'thread'
+
 if Facter.kernel == "Linux"
     processor_num = -1
     processor_list = []
-    File.readlines("/proc/cpuinfo").each do |l|
-        if l =~ /processor\s+:\s+(\d+)/
-            processor_num = $1.to_i
-        elsif l =~ /model name\s+:\s+(.*)\s*$/
-            processor_list[processor_num] = $1 unless processor_num == -1
-            processor_num = -1
+    Thread::exclusive do
+        File.readlines("/proc/cpuinfo").each do |l|
+            if l =~ /processor\s+:\s+(\d+)/
+                processor_num = $1.to_i
+            elsif l =~ /model name\s+:\s+(.*)\s*$/
+                processor_list[processor_num] = $1 unless processor_num == -1
+                processor_num = -1
+            end
         end
     end