IE7 & vB3.7 Not Compatible: Ctrl+Z AND Quick Edit Function

[Erika]

Hello, I have a forum with vBulletin 3.7, and I have found that some users with Internet Explorer 7, are unable to use certain functions:

1. Some users cannot employ the Undo function (Ctrl+Z) on the forum (in Post Reply and Quick Reply). How do I fix this?

2. Some other users (and some of the same) are unable to use the Quick Edit function (after pressing edit, the inline post edit, rather than the Advanced Edit). Is this problem connected? How do I fix this?

I realize that this problem may not be a vBulletin issue, but does anyone know the solution for these users? Is there some seetings in IE7 or vB3.7 that need to be tweaked? And if so, what are they?

Thanks for any potential assistance that you may be able to offer. It's greatly appreciated.

-Erika