It mounts, i can r/w normally through shell also as non root user. When i use a normal kde app, or even java, after some time i get a error saying: 'can't write/create file name XXXX - please check permission'. Now, the exact phrase depends on the app of course. But the problem looks to be always the same. If i go to usbdisk, it claims to be a readonly filesystem and i can't do anything - not even as root. Unmount, mount again and everything works for some time. It is annoying, i use a lot that disk. Tried to look at logs for some hint, also tied to run two of those apps in debug mode, but couldn't get any idea. I run a standard fc1 box, regularly updated. Any idea? E.