RuNnaH

Don't try to see open source as a threat, but as an advantage. When a very critical bug was discovered that affected Mozilla/Firefox/Thunderbird, an update to fix this problem was available within 48 hours. Could you give me an example? Firefox allows plugins (aka "extensions") and visual themes to be installed. A couple of popular extensions such as Adblock (advertisement blocker), All-in-one Gestures (allows you to control the browser with mouse gestures) or Web Developer are available. MozBackup can take care of that. It works for Moz/FF/TB. Example? I haven't noticed any problems with sites which use BIG5(HKSCS) or SHIFT_JIS. This also depends on the doctype that needs to be specified.

which update give the trouble.....? :| ... ... ... =_=; KB817778.

I've attached an image that shows the error during T-12. It doesn't matter what file name is used, so that confirms what Alanoll already said. Apparently the problem seems to be coming from something that gets executed from inside the hotfix package. Installing it with RunOnceEx causes trouble as well, where QFECheck says that it needs to be reinstalled (which validates after doing a manual install and reboot).