|You are going to be admonished for posting a HijackThis log. There is a "rule" around here about doing that.|
But now that it's done, can you explain why you feel the need for SIXTEEN Browser Helper Objects (BHO's) plus other toolbars?
As a first step, try disabling ALL of them, then re-instate ONLY the ones you feel are useful/necessary to your needs.
At a minimum, get rid of "mywebsearch"!!
Why do you have multiple instances of IE8 open?
And please, clean up what gets loaded when booting your PC. A lot of what I see is really un-necessary.