Apologies for the lack of updates because I've been pretty busy lately. I do read your comments though.

Just a quick response to some of your reported problems regarding Gmail Checker:

• 2-step verification works fine on my end. If it doesn't work on your side. Please email me the debug log. Without the debug log, I've got no idea what the problem is.
• Browser freeze when checking mail. This is unfortunately true if your system isn't fast enough. I wrote this extension a long time ago and Firefox didn't support multi-threaded extensions back then so all extensions and the browser had to run on the same thread. Background threading for extensions has been added to Firefox 4 [ref] so this issue is solvable. I just need time to implement this. Hopefully soon!

Gmail Checker version 2.6.1 is now available. This fixes the nested label problem.

Follow up the previous post, if you still have the login problem, try Gmail Checker version 2.5.0.92 2.5.0.93 2.6.

I've got a good idea of the problem but since it doesn't happen on my end, I need you to test the fix. Thanks to everyone for sending me the debug log.

Either this version works or doesn't work, please email me the debug log of one account that used to have or still has the login problem.