I have a CIM provider that just calls virConnectOpen("qemu:///system"); and virConnectClose(). When cimom unloads this provider segfaults - #0 0x000000305b420cd0 in ?? () (gdb) bt #0 0x000000305b420cd0 in ?? () #1 0x00000031a3e05ad9 in __nptl_deallocate_tsd () from /lib64/libpthread.so.0 #2 0x00000031a3e0674b in start_thread () from /lib64/libpthread.so.0 #3 0x00000031a32d3d1d in clone () from /lib64/libc.so.6 If I remove virConnectOpen and virConnectClose, the provider unloads without any problem. I am using RHEL 5.5 with libvirt-0.6.3-33.el5 and kvm-83-164.el5. Any ideas on this core? Regards, Sharad Mishra Open Virtualization Linux Technology Center IBM