XP Pro, SP3, IE8 I noticed that I had two instances of iexplore.exe running in Task Manager processes. Discovering this was part of my attempt to find out why I suddenly couldn't sign in to WLM. Having done some searching on different forums, I discovered that some people were blaming the BT Yahoo Toolbar for this behaviour. I have run the BT Toolbar without problems before, although I recently upgraded to version 8, so the new version may be the problem. I decided to open IE8 in "No Add Ons" mode but Task Manager still showed two iexplore.exe processes (one using about 54,000k the other about 15,000k). So then I uninstalled BT Yahoo toolbar along with any other BT or Yahoo applications I could find in Add/Remove Programs and rebooted. On reopening IE8 the two processes were still shown even after toolbar etc. uninstall. I use Microsoft Security Essentials as my AV and have recently run Malwarebytes and Superantispyware (both fully updated) so I don't think it's a malware or virus problem.