HJT Log and Question

I am using windows xp and internet explorer and now am experiencing alerts stating "system intrusion detected" and when internet explorer is opened the page is (do not click) securitycaution.com with pop-ups, in the internet explorer tools menu the homepage is still the one I had set (google) and after running AVG, ad-aware, spybot search and destroy, I have also gone through the programs menu and removed the toolbars and associated programs but the problems persist

i have included the hijackthis log and hope you can help me to solve this problem, i have also already gone through the HJT log posting "please read" and gone through all of the steps to the best of my ablities



thanks,
rstywb

Edit: Inline log removed

 

Thank you for the reply,
-i have gone through all of the special removal procedures, it doesnt match all of the problems at hand
-however the tutorial did help with the homepage redirect, its normal so i have my homepage back
-there is still the alert from an icon in the taskbar stating "system intrusion detected" and continuing with a paragraph about a dangerous infection and....loss of data and click-here to protect your computer from malware threats
-even though it has been uninstalled multiple times "spywarestrike 2.5" loads itself each time the computer is rebooted
-i uninstalled all antivirus programs except AVG which is updated, ran the scan multiple times
-i ran ad-aware (current on updates) it detected nothing
-spybot - search and destroy (current on updates) noted a problem w/ "Windows.ActiveDesktop" which i fixed
-after running hijackthis in normal mode i went through the list according to HJT tutorial, fixed the apparent problems, however the alert coming from the taskbar still remains even after rebooting the computer

what do you suggest i do next?

again i cant thank you enough for the assistance,
rstywb