I'm not sure what you mean with SP2 - but I can think of 4, maybe 5 threads based on experience from problems with SP2 - a few more just saying don't install SP2 for no apparent reason.
Its been working brilliant for me and my sister and my 3 year old downstairs Computer for 7, 8 months now - even as a Beta it worked brilliantly.
Again; all the problems with Internet Explorer are based on the people using it - not the software. I know this from my sister; who regularly uses MySearchBar to change her Mouse skin. She doesn't check up on Kazaa when its installing crap like MySearchBar and she doesn't know how to use AntiSpyware. However; I install Microsoft AntiSpyware on there a few days ago and its made using Internet Explorer safe even for her stupidity - and while she misses colourful mouses she hasn't had Spyware or Toolbars on there since it was installed.
It works perfectly with SP2 and AntiSpyware.
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.