Hi all...I've been running the W7 release candidate for a couple of days and have had the pinned icon for Mozilla Thunderbird disappear several times; removing and reinstalling will bring it back, but it will disappear within a few minutes, leaving only the standard Windows "I don't know what this is" icon. Clicking the icon brings up Thunderbird without any problem, so it's just a cosmetic issue with the icon. Same thing in the Start menu for Thunderbird. See the attachment and you can see the buggered icon next to the Firebird icon. Any ideas on how to fix? I don't see how this can be a Thunderbird issue, but it only does it to that icon (so far).