It appears like the profile may have become corrupted. Have you tried using System Restore in that profile?
Click on Start-All Programs-Accessories-System Tools-System Restore. When the System Restore window opens, select to "Restore my computer to an earlier time". When the "calendar" window loads, then choose a day when things were working properly.
Hope this helps.
I am no longer able to use the ctl+enter shortcut in my URL Address bar on my main profile but can use it in secondary profiles. I am running Windows XP (Service Pack 2). Anybody else have this problem or know how to fix it?