Seen as this would be a fairly rare set of circumstances, i bit the bulltet and installed EPDM and SW again, SP5 a couple of days ago. so far i have only really been doing EPDM admin stuff and very light SW use. i haven't really been pushing either of them to much. so far 2 days on and there has only been a "minor glitch" every now and again with windows explorer crashing. (gees i really hope i don't jinx myself here! lol) it is kind of like a high stress nervous tick. just happens every now and again and is hard to tell what will trigger it. so i had a look at the event logs and explorer crashed every time it tried to access something called the windows location provider. so i googled windows location provider to see what it was and how to turn it off, and look what i found!
i never turn stuff like this on! this is set to default to be on and you would never know if there was never a cause for you to look at it or for it. needless to say it is now off.
i will update in a few more days after i have put both programs through their paces a bit.