I'll try to get over to see you soon.
Sounds like a couple things:
Video card driver isn't loading automatically if the boot sequence isn't normal
(as if you go to safe mode and exit from there, it doesn't load those drivers).
Seems that has happened before.
I may be wrong.
The hijacking(s) could be downloads that come along using other legitimate programs.
Seems the AOL AIM & Yahoo might still be involved. The firewall reports "hijackings"
that it has blocked, also. Be sure thats not the case. Also some application hijackings are really normal action. I found that out when a Lexmark All-in-one software program was listed that way in the firewall report. A hijack is when a program that was normally doing one thing is now doing another, so there are ways you can make changes in what you are doing that will appear to be a hijacking by that definition that really isn't.
If you notice that when using the Adaware & Spybot programs, problem files keep being found, or any details about those anti-spyware programs that give you a reason to worry about malware, let use know exactly what is going on.
It is possible those programs, even being updated, are not catching some new thing.
Not probable, since you were clean recently and have the firewall up, but possible.
If the computer slows down, the firewall shows problems not blocked and/or the anti-spyware indicates that it can't get rid of something, then you'll need to run
the HJT under the supervision of someone here to find out more of what it's doing.
You're learning, thats good!