> 11: ? ?1636542 ? ? ? ? ?XT-PIC ?Intel 82801CA-ICH3, Intel > 82801CA-ICH3 Modem, uhci_hcd:usb1, uhci_hcd:usb2,eth0, yenta, yenta, > ohci1394, Thanks a lot for all IRQ hints. Well, I disabled the nvidia driver and ensured ALSA does not load the module for the internal AC '97 chip. IRQ11 now looks as 11: 2428122 XT-PIC uhci_hcd:usb1, uhci_hcd:usb2, eth0, yenta, yenta, ohci1394 Disabling the NIC is a no no, I really do not want to reboot for writing an email ;-) . Result: Better latency, so I can recommend to avoid IRQ sharing. I can now run JACKD with -p128- This still gives some glitches every now and then, *but* at -p256 as I used before the glitches seem to be gone. I wonder if I could force the USB bus to another IRQ or if I could move eth0 and yenta to another IRQ. Best regards ce