Check your system for malware. Ad-Aware is a comprehensive and free anti-malware application. If you already have an anti-virus package, download the latest AV definitions for it and do a full system scan. After that, try completely removing WLM and Plus! from your computer - both in terms of files and registry entries. Then re-install the latest versions of both (although I'd suggest against the WLM 9 Beta) and try again.
