I do plan on upgrading to avast 5.0 Ohhh, probably around the end of February. I figure that should be enough time for all the major Bugs to be ironed out. Who knows? I may upgrade sooner IF ... the talk on the Forums indicates that the BSODs and Freezes, Etc. glitches have been backhanded into submission before then.
I might be more inclined to be more daredevil-like and try avast 5.0 right now if I was better prepared in case the you know what hits the fan.
In other words, if something were to go seriously wrong and I wound up needing to perform a Windows Reinstall ... well, I've never done one on my Windows XP computer. I've performed zillions of 'em on my other computer, the Windows 98SE one because I have my 3 Gateway System Recovery CDs. On my now main computer, my Windows XP HP Pavilion, I do NOT have System Recovery CDs. I got this computer used. I do have the genuine Windows XP CD. This wasn't the original OS on this computer. It used to be a Windows 98 computer back when my friend had it.
Bottom line, I don't know what to expect. I've never done a Windows Reinstall without System Recovery CDs. I wouldn't know what Drivers I'd end up needing ... where to get them and how to install them.
I do have all my Files, Docs, Pics and stuff in general backed up, though.
Anyway, that's why I'm waiting. I want to really minimize the likelihood of having to end up having to perform a Windows Reinstall.