Malware, Adware
How is it, that, every few days, I monitor my computer with Adaware and Spybot, and I seem to bring up the regular list of "the usual suspects", which I duly exterminate. And yet, a few days later, on repeating the operation, they're back, and must be eliminated again.
In the meantime, have they just returned right after my spring clean? How have they returned, and from where? And how much harm are they doing, compared to a virus or trojan?