umm I got a really freaky problem with my Avast! I'ma bit of a newb with progs and configurations and that sorta stuff, so go easy on me

I'm not at home atm so I cant post the exact error mssg that I'm getting, but rest assured I will when I get home

basically its something along the lines of
"AshMaiSv.exe could not get a response from the server"
I checked that my firewall was allowing it "Norton Internet Security 2003" with latest updates, and that seems to be fine.....its a really annoying issue to cos it freezes my sys to the point that I cant even open Task Manager to kill it......meaning a hard reboot :'(
so far the only way I've managed to stop this happening is to uninstall Avast! from my sys altogether, which obviously running without the planets best AV (in my opinion anyways

) is not a wise idea at all I'm sure you'll all agree anyways sorry for making this post so long I'll just post some sys info and close this post...
hoping for a fast response as no AV has got me worried sick

System Info
OS = Windows XP SP1
CPU = 1.5Ghz Pentium 4
RAM = 256Mb SD
Graphics = Nvidia GeForce2 MX/MX400
Firewall = Norton Internet Security 2003 w/ latest updates
Antivirus = Avast! latest edition....(re-downloaded yesterday) (currently uninstalled due to above issue)
PS
I also have YahooPOP installed on my sys from a failed attempt at installing Mozilla Firefox. Could this create any issues??
PPS
Promise to get exact error mssg as soon as I'm back home
