Hello. Often when starting my computer, vdr crashes without any specific reason and freezes the computer ! Nothing is possible/available on my comnputer ! I just have to reset it ! Looking at syslog files, I have a long list of kernel PREEMPT, the last one freezing the computer ! Most of this PREMPT finishes with the following line: Nov 3 07:18:39 localhost kernel: <1>Unable to handle kernel NULL pointer dereference at virtual address 00000020 The first PREMPT occurs after a problem on DXR3 card ! Nov 3 07:18:23 localhost vdr[3105]: dxr3: fatal: microcode upload failed: Timer expired Nov 3 07:18:23 localhost kernel: em8300: DICOM Update failed Nov 3 07:18:23 localhost kernel: em8300_video.c: Video Fifo timeout Nov 3 07:18:23 localhost vdr[2470]: dxr3: resuscitation: device failure or user initiated reset I have a long list of call traces... It seems that problems cames from a badly managed page fault ! I don't know what to do... Does anyone have a suggestion of what I could do in order to avoid this ? What could I look in the syslog also ? Many thanks for any help. Michael