Mumak, Suggest that you do a full uninstall of AMD CAT drivers and then re-install them. Select Xfire upon restart and then re-start BOINC. I also once experienced sluggish BOINC and windows 7 performance when I added Xfire card without doing full driver re-install. Are you getting an error readout with your stuck WUs? If so what is it?I recently run into a similar problem. Have set my cache to 0.10 / 0.10 and now I have 501 pages of In Progress. The client is responding very slow now and some WUs are getting stuck after a while (don't know if this is because of so many WUs in cache). Has anyone experienced stuck WUs? I've been running without issues so far with 7950+7770, after replacing the 7770 with another 7950 such problems start to appear...
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