Are you sure it's a permissions issue and not just a bad drive?
I have a strange problem on my boot drive.
It is an 80gb intel ssd, not that should make any difference.
There seems to be some permissions problem with copying files to this drive or sometimes with creating new files.
When I install software I typically get an error message when the installation program trys to create menu shortcuts. The rest of the installations run ok.
Also, sometimes the computer refuses to let me copy files to this drive. I have tried changing permissions but I admit this is a confusing area for me and I am no expert. Can someone give me a hand?