Qbox S2 and fedora 15 64 bit driver issues.

I have problems with the Qbox S2 on Fedora 15 64bit - default kernel.
When scanning, halfway true the driver/device crashes. I have to take the power of the Qbox S2. Just a reboot is not sufficient.
The TBS 6925 which i tested in the same system, same OS, same driver does work just fine.
Cheers,
Michel
When scanning, halfway true the driver/device crashes. I have to take the power of the Qbox S2. Just a reboot is not sufficient.
The TBS 6925 which i tested in the same system, same OS, same driver does work just fine.
Cheers,
Michel