I've been reading some of the posts about permissions ect...I've had the same issues...sort of. I don't know why but Vista would not let me copy files to a network computer. But I think I solved that one. I was using Kaspersky internet security and believe that the default settings were too high. Since removing it, the problem has gone away. However, I still haven't tried to write to the public directory on Vista (Permium by the way). Kaspersky is a great program but it's a little bit intrusive, interefering ect...I have it on one of my other PC's and use it to scan the network drives from time to time. I couldn't stand the way it bogged everything down. Almost as bad as Norton... But I am still having troubles with Internet explorer, some pages take forever to open. I think it might be in the security settings as well, looking for certificates etc... Wouldn't it be nice if there weren't any hackers or virus writers? My two cents...