rac halved since upgrade to ubuntu 9.04 jaunty

The title says most of it, and it's happened on two different boxes - only similarities are AMD64X2 CPU and running same ubuntu version, before and after.

For the record, I'm running AKV8 SSE2, but I don't think it's relevant.

Much more likely, as in 8.x, a power management setting limits cycles to 50% max, but I can't find where to disable the limiter.

and, no, powersaved isn't even installed.

Has anyone had the same problem and found a solution?

Edit: eeeeek! no I'm not running AKV8 any more, hold on, checking stuff...
Edit: AK_V8 and the right app_info.xml are in /var/lib/boinc-client/projects/setiathome.berkeley.edu/ but setiathome-enhanced is running. I'll try a reinstall tomorrow and see what happens.
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I thought that all amd 64 beyond socket 754 were capable of sse3
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