Just un-installed Catalyst 8.7 and installed 8.8 (I did have to re-boot before running aticonfig --initial). I tried to run simple_matmult_d but I still get (with openSuSE 11 + Radeon 4870):
libxcb: WARNING! Program tries to unlock a connection without having acquired
a lock first, which indicates a programming error.
There will be no further warnings about this issue.
libxcb: WARNING! Program tries to lock an already locked connection,
which indicates a programming error.
There will be no further warnings about this issue.
simple_matmult_d: xcb_io.c:352: _XReply: Assertion `!dpy->xcb->reply_data' failed.
Aborted
---jski