Hi again all, I finally managed to get my system installed in such a way that I can have both NPTL and LinuxThreads versions of glibc installed at the same time. However it's proving a headache. VDR (1.3.21 down to 1.3.19 - I've not tried anything below this) hangs on recording and becomes totally unresponsive - no input from the console is read, no response from SVDRP, nothing is displayed via the DVB card. I've looked into where the hang happens and its in SpinUpDisk on the line that calls system("sync") - if I comment this line out then everything works perfectly! Has anyone encountered this problem? Many thanks, Chris