I know that people will swear that ME is fine for them, but I had 4 years of trouble with it of all sorts and now I have XP and it is just wonderful compared to ME. I don't think I will ever forgive Microsoft for putting me through all those years of hassel with that rotten software.
There is problems with Zonealarm that are listed in other posts here about 'not getting updates from the Zonealarm site', and having to 'stop 'truevector' to be able to upgrade', but those problems aren't ME related.