While it's most likely a False/Positive, please Delete Combofix from Quarantine, don't Restore it. Combofix isn't something to hang onto & use every now and then: It's frequently updated and it's best only to use it with guidance from an expert in such matters.
The WinPatrol alert is worrisome.
Quote:
McAfee preinstalled and was run for the trial one month period...it's still on there, as is still in start menu list of programs.
Not good at all! You should have uninstalled the McAfee free-trial and run a specific removal tool BEFORE you installed Avira AntiVir. Let's take care of that now:
1. Download the McAfee Consumer Products Removal Tool, saving it to your desktop:
http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe 2. Close all open applications (i.e., anything with an icon on the taskbar).
3. Uninstall the McAfee application via Add/Remove Programs & reboot.
4. Double-click on the file you saved in #1 above (MCPR.EXE) to run the utility. Don't TOUCH your keyboard until the run completes, then reboot again. You can now delete MCPR.EXE to the Recycle Bin.
5. Open IE8 (only) to
http://support.microsoft.com/kb/923737 & run the Fix It to reset IE8 Advanced settings
then reboot yet again.
6. Open IE8 (only) to
http://windowsupdate.microsoft.com | Select CUSTOM and scan | Install any Critical Security Updates offered (e.g., KB982381). If a Root Certificates update is listed in the Optional Software updates category on the left-hand side of the scan results window, install it to take full advantage of IE8's enhanced security. Follow all prompts.

Do NOT install any other Optional Software or Hardware updates.
7. Manually & repeatedly update Avira AntiVir until you get a "no more updates" prompt then run another full system scan.
8. Test, then reply to this thread with an update on your situation.