Winampa.exe
(Nullsoft)
Background task from Winamp which has two purposes : on the one hand it provides the Winamp System Tray icon, and on the other it maintains file associations so that other applications do not take over file associations which Winamp normally handles. As a System Tray icon Winamp is rarely used; most users use Winamp through double-clicking on an MP3 file rather than through actually starting it through Start \ Programs. Therefore, for most users there is no need for a Tray icon which just adds to the clutter. More worryingly, in our experience WINAMPA seems to cause unexplained crashes in Netscape and Internet Explorer, and a few other programs. Disabling WINAMPA totally seemingly gets rid of the crashes.
Recommendation :
Disable Winamp Agent in Winamp itself. Click on the top left corner of Winamp, then choose "Options \ Preferences", then "Setup \ Agent" in the left bar, then take the tick OFF "Enable Winamp Agent" and all sub-options on the right-hand side. Click CLOSE. Close Winamp. Reboot your PC.