There are ALOT of task there that are pretty much spyware, or stuff that can at least me end tasked with little side effects. BixFix, Rainlendar2, RealMedia, iTunes, GrooveMonitor
... these can most likely be closed. Hell, you can remove RealPlayer and switch to Real Alternative to save on system resources (and QuickTime Alternative for QuickTime...).
It appears to me that most of your issue would appear to be a lot of useless apps running. Try running something like Ad-Aware
just to make sure your not running any spyware? What virus scanner are you using?