Hi, I'm running winxp pro and just recently I have been getting an odd problem on certain applications (not all) when closing them. Basically, on closing the programs an error message pops-up with "the instruction at ** referenced memory at **. The memory could not be written" message. The ** changes with each application this affects. Otherwise all programs seem to be running fine, so though annoying this isn't a critical problem as yet (touch wood). I've looked up the error at microsoft via event veiwer (which this bug does affect) and all it gives is a generic: "Explanation: The program could not load a driver because the program user doesn't have sufficient privileges to access the driver or because the drive is missing or corrupt." The programs this affects (so far) are anything in administrative tools, user accounts, photoshop and FlashFXP. There's bound to be more but so far all other I've tried are still error free (firefox, outlook, word, excel etc) Also, if I start up in safe mode there's no problem, affected progs close fine, so I cant see this being a hardware memory issue. At my end and with no luck I have done full virus/spyware scans with latest definitions (nowt found), deleted & restored pagefile, and I tried a system restore but good old microsoft sent down a "software distribution package" via automatic updates a few days back that seems to prevent my rolling back anywhere before that date which kinda makes that sytem restore pointless but nevermind. Also seems possible that update is what kicked off this problem as it never occurred before then. One other thing is I often use "Regcleaner" to clean up my registry but now that crashes my comp (restarts) during the auto clean-up so that would seem to be related (I have another registry cleaner installed that seems to still work fine atm, but that one isnt so thorough) Again, regcleaner works fine when in safe mode. Anyways, thanks in advance to anyone who may help as I cant think of anything else at my end.