Difficult for me to reproduce, but sometimes Mozilla's interface, both XUL and the viewing area, will freeze up and I cannot do anything on it. Although appropriate areas of XUL does respond to mouse overs but do nothing when I click on them. Only been able to test on Windoze 98 PC, 96 megs RAM, Build 1999120315
Reassigning all of leger's unscreened Browser-General bugs to email@example.com for pre-screening and triage.
The way I know to make this happen is described in bug 16944, "Dismissing menu with [ESC] freezes mouse input current window", M15 ... depending on how you use Mozilla, that could be irrelevant here, or it could be the whole explanation. firstname.lastname@example.org, does this ring any bells? Also, have you seen this since the beginning of December?
No follow-up after 3 weeks; resolving as WORKSFORME. email@example.com, if you're still seeing this on M13 and can reproduce at all, please re-open with your comments. Thanks!