Limewire refusing to stay out of the system tray was the reason I had asked for help, but I checked out everything mentioned in the solutions in this thread, and found nothing on my (new)computer that was as described there. There is no file consuming high CPU. There is no file called winupdate or anything with "win" in it in the Prefetch folder. I CAN access the Task Manager. I did, however, delete Limewire. I took fright.
I have downloaded some rare and thrilling music from Limewire and hate to lost it. Moreover, I had eliminated the problem of having it appear at startup using "Advanced System Optimizer" utilites. I know that was just a bandaid on the problem, but I don't seem to have the other problems other users have mentioned. If I do nothing further, am I just cruising in ignorant bliss?