Hi, latest KB2532531, KB2533623, KB2555917 failed to install on my system because of BITDEFENDER AV2011!!! Everytime windows downloaded and try to configure, it reverted back on boot, so I uninstalled bitdefender AV 2011 with the uninstall tool, after that the updates installed fine!!! Thanks BD for letting me uninstall AV2011 again, this has happend before a few times...now I have to install BD AV2011 again, rediculous...