>>Just now I tried to remove 2 replies I received earlier today. In the replies management form I'm seeing some problems using FireFox 9.0.1:
>>
>>- The "Check" button is supposed to select all the replies. Currently, it does nothing.
>>
>>- It is still possible to select messages individually. However, the "Remove" button is also doing nothing at this time. So, I can't delete my replies.
>>
>>UPDATE: same problem with IE9.
>
>Could you try to force a manual refresh of the reply page so just to make sure you have a fresh version of a javascript file. It hasn't been changed since a while but the version in the cache might have gotten corrupted.

Just tried that, I'm still seeing the same problems in both browsers.

FWIW when I mouseover the Check and Remove buttons, both browsers show:

Check: javascript:MarkAll(document.LX,true)
Remove: javascript:ResetForm()