I have a user who has a GMail account that locks up whenever she tries to reply to a message. This happens with her account no matter what machine/platform I try it with. On her machine (new HP laptop, Windows 7 Home Premium, IE8 AND Chrome, no extra toolbars or extensions, Adobe plugins), I tried basic HTML mode. No dice. Disabled all the add-ons. No dice.
Sending is OK. Each time she replies to or forwards a message, the IE hangs and then gives this error: "A script on this page is causing Internet Explorer to run slowly. If it continues to run, your computer may become unresponsive. Do you want to abort the script?" Microsoft didn't have much to say about the error, either. Ignoring the message to stop the script just makes IE hang longer and then not respond. You have to give it the three-finger salute to close the browser.
I tried logging into her GMail account with a laptop running Vista Business and IE8, another laptop with XP Pro and Chrome, a desktop with Vista Ultimate and Firefox, Chrome, and IE8. It timed out in each instance. If I log on to my GMail account on any of these machines, everything is fine. Only her account has the problems.