Hello, I'm also having the same problem from time to time, using iceweasel 2.0.0.1+dfsg2 from testing distribution. I can reasonably reproduce the behavior if using the gmail notifier plugin is allowed, but I think the problem arise from other paths too. Steps to reproduce it:
Step 1: Get a G-mail account if you didn't have one. Step 2: Install G-mail notifier plugin if you didn't already have. Step 3: Restart Iceweasel. Step 4: Enable master password if you haven't already done so. Step 5: Click on the (gray colored) G-mail notifier icon at the bottom right, enter the username and password, and choose to save the password. Click on login. Step 6: Restart Iceweasel. Step 7: Click on the (gray colored) G-mail notifier icon at the bottom right. Step 8: The master password prompt should pop up. Type the master password. Step 9: The G-mail notifier login prompt appear, with filled login and password. Click on login, and before the login completes, quickly click on the location bar and start typing. For me, Iceweasel no longer respond to keyboard some time before the login completes. Regards, Isaac.
