I've now seen 8 PCs which were having random and varied problems - Windows wouldn't update on Vista, IE8 kept dropping etc etc. In each case, the problem was resolved by uninstalling Trusteer. When doing this, I was asked to inform Trusteer why I was uninstalling and which of the following list (about 20 items) were causing problems. Looks to me as though the software was released too early, and the general public are being used a quinea pigs.