Hopefully this will help someone else.
After upgrading from 7.1.3 to 7.2.5 FOSS on Ubuntu 10.0.4, the account folder list would not load in the advanced web interface.
I unzipped and rezipped the /zimbra/js/Startup2_all.js . The file loads correctly now in IE 10.
gunzip -S .zgz Startup2_all.js.zgz
gzip -S .zgz Startup2_all.js