have to uninstall avast if i want to reinstall ie8

recently I wanted to reinstall ie8 anyway during the uninstall process the pc had a bsod the only way I could uninstall ie8 and reinstall so I could do a system repair
Was to uninstall avast
Microsoft recommend to uninstall ie8 if you want to a repair on xp which sp3 fully up to date I using xpvol sp3 I know earlier this year there were problems with avast and xo with bsod can anyone help or suggest what this could be regards bazer