After upgrading to the last svn version (to get rid of the 401 problem) i started experiencing the following issue:
Gmail Authentification will not work. If I click on 'Open' to see an email or on 'Compose Mail' it takes me to the gmail login window where i have to manually log in.
It seams like the url that checkgmail generates doesn't work.
I am using chrome but i also tried firefox with no success.
PS: There are others affected as well: http://ubuntu-ky.ubuntuforums.org/showthread.php?t=1283708&page=4#34