Hi I've just tried using spca50x on SUSE9.0 and discovered the lockup problem when the driver unloads. I decided to investigate myself, and on trawling the archives came across your e-mail of 2003-08-28. Are you still investigating the problem? If so, what progress have you made and can I help? I've got a good knowledge of C and C++, but unfortunately, like yourself, little experience with drivers. Regards Barry Morrison Weston-super-Mare, England.