Hi, I have a SPARCserver 630MP with two CPUs running the latest frozen and a vanilla 2.2.15 SMP kernel. This setup was running well until I replaced the TGX frame buffer with a ZX. Now I'm getting random hard freezes, watchdog resets, and kernel panics. I tried 2.2.16 and 2.2.17pre5 with the same results. I'm now running a vanilla 2.2.15 up kernel with no stability problems. Is the leo frame buffer well tested in an SMP system? Thanks, Bob.