Sorry, you are reading only the failures. The office with 50+ machines, lab and home installed SP2 without a hint of a problem.
Many had spyware or other problems before SP2. SP2 gets to be the scapegoat.
Just an opinion:
after reading hundreds of horror stories on different forums about SP2 trashing some systems I just don't understand the rush to get it installed. I read where IBM is holding off until the upgrade is more reliable and that convinced me to wait for awhile. I for one have not had one instance where someone has tried to hack my system, feed my computers (4) a worm or disrupt my way of life in any way. So I say if it aint broke dont fix it.Sorry for the tirade but I had to say it. LOL