You have either a dual core, or Hyperthreading cpu.
You could uninstall the gui client, and install two instances of the console version. Each would take up
a different side, and you would reach 100% utilization.
Yes, the reason is Hyperthreading turned on and task manager is not displaying it correctly. Thanks!
I don't believe that XP Home runs dual processors.
I went ahead and did as you said , so running two folds on my Hyperthreaded P4. I accidentally stopped a long one (Tinker?) that was running in the GUI but I moved all the work files over to one of the console folders and it seems to have picked up where I left off in the GUI....wew..there was about 18 hours of work there. Frames were taking 5-6 min on that one, but are now taking 8-9 min. A little slower, but taking that other Fold I now have running in the other console into consideration, I'm still doing more work overall!