To be exact /local/werner> ldd /usr/bin/X | grep pthread libpthread.so.0 => /lib64/noelision/libpthread.so.0 (0x00007fb6e532f000) that is the ld.so configuration does works here but the cause could not be the HLE sandybridge bug. No idea if there is a ucode update in the ucode-intel package and currently the apache on opensuse.org has na hickup