I have just downloaded the LiveCD Feisty Herd3 for testing, and I have installed this package. I can say you that now the CPU is no more 100%. Now the use of the CPU is very low (0% - 2%). I can think now that this bug will be resolved with Feisty release.
-- Using zynaddsubfx causes 100% CPU usage https://launchpad.net/bugs/77567 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs