Thanks Sypher. I already uninstalled/reinstalled MSN 7.0.777, applied the 813 QFE patch and then applied latest A-Patch. Everything working fine and stable, but the usage count as shown in Task Manager is still the same, about 855MB for 3 MSN clients open. As said, if I close the 3 clients the system usage goes down below 300MB so it's MSN that's wasting huge resources for some reason.
