Hi, I'm not completely 100% sure about this yet (had one confirmation of it, but waiting for two others to get back to me), but I've been tracking a problem relating to SIMD for a while in: https://qa.mandriva.com/show_bug.cgi?id=53870 It's hardware dependant and my hardware is not affected, but with some interactive session today, I was able to work with someone to narrow down the problem. It *seems* that pa_volume_func_init_mmx() is to blame. Not calling this seems to address the issue. This will only affect those users with MMX but without SSE2. IOW, with this call commented out, non-SSE2 users will use an unoptimised (but working!) code path. Here's a handy patch for you until I can say for sure what the problem is (e.g. my two other users confirm the "fix"). http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/cooker/pulseaudio/current/SOURCES/0505-mmx-Disable-pa_volume_func_init_mmx-for-now-as-it-se.patch?view=markup wtay, if there is anything I can do to help you debug please shout! Col -- Colin Guthrie gmane(at)colin.guthr.ie http://colin.guthr.ie/ Day Job: Tribalogic Limited [http://www.tribalogic.net/] Open Source: Mandriva Linux Contributor [http://www.mandriva.com/] PulseAudio Hacker [http://www.pulseaudio.org/] Trac Hacker [http://trac.edgewall.org/]