Roaming Profiles and 10.5.5

Hi, I recently upgraded our servers to 10.5.5, thinking I would see massive improvements still, as with the previous 10.5 updates. To my dismay, we are having Windows Roaming Profiles issues since the upgrade! When a client attempts to log in, Windows is not copying some files over due to "The specified network name is no longer available". It is always on certain folders in the profile (namely Adobe Local Settings and Microsoft Local Settings). When these are deleted from the file server the users are able to get their profile, but the same issue occurs the next time they log in. This really seems like a problem with the profile service on 10.5.5. Is anybody experiencing this, or does anybody have a solution to the The specified network name is no longer available problem? Regards,