I run W98SE for operating system as for how it crashes, it is intermittent about the crash but it will just close with no warning with illegal action message. I have noticed sometimes it will be unable to display the inbox or deleted folder for example prior to this. If I do away with the email scan feature in Avast! this will stop. Yes I have the latest version of Avast!. I know this not much to go on and is probably a hard one to put a finger on. Thanks for reply…