After upgrading (fresh install) to Precise 12.04, I noticed that xsane had this error whenever I ran it:

"Failed to create file: Permission denied"

Shown in a dialog.

I have a HP 7520 and xsane does detect it and makes it scan.

But whenever I go adjust preferences in xsane or close xsane the same error dialog shows up.

I think it's a permission problem but I can not find where.

I already made sure my user is part of the scanner group and I can't find any other references to this error online.