The default classname for the $selector should probably be named "advancedSelect" and not "advandedSelect". I guess it's a typo.
Probably typo in default value for $selector
Changing class from advandedSelect to advancedSelect
Changing class from advandedSelect to advancedSelect. Thanks to Jean-Marie Simonet for pointing that out.
Added an instance of 'advandedSelect' in the mod_login to the PR.
Please create a tracker on joomlacode and cross reference here.
Change in class name potentially breaks 3pd extension
Already done, but forgot to back reference: http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=29717
I don't think breaking 3party extensions is an issue. For one everyone that really uses "advandedSelect" as a classname probably thinks that must be a typo (like I did) and then 3.0 is still a short term release where exactly such issues are expected to be found and fixed :-)
Fixed at 91a3a5b