32 Bit, XP, Nod32, AVG Anti-Spyware, Windows Defender and Sandboxie. After boot it keeps promting to for the install disc for ScanSoft OmniPage SE 4.0 (A Canon All-in-One Printer file). Printer features work fine. Then when I came home from work to night all programs barely will open or run. Complete slow down yet very low RAM usage. Uninstalled and everything works normally again.