Comment 1 for bug 264201

also in kernlog:

Sep 4 15:28:48 komcrapper kernel: [ 137.309696] ohci1394: fw-host0: Unrecoverable error!
Sep 4 15:28:48 komcrapper kernel: [ 137.308769] ohci1394: fw-host0: Iso Xmit 0 Context died: ctrl[40649806] cmdptr[f000e2c3]
Sep 4 15:29:35 komcrapper kernel: [ 161.640501] ohci1394: fw-host0: Unrecoverable error!
Sep 4 15:29:35 komcrapper kernel: [ 161.640516] ohci1394: fw-host0: Iso Xmit 0 Context died: ctrl[20648806] cmdptr[f000e2c3]
Sep 4 15:30:44 komcrapper kernel: [ 195.899136] ohci1394: fw-host0: Unrecoverable error!
Sep 4 15:30:44 komcrapper kernel: [ 195.899158] ohci1394: fw-host0: Iso Xmit 0 Context died: ctrl[40649806] cmdptr[f000e2c3]
Sep 4 15:31:18 komcrapper kernel: [ 213.709287] ohci1394: fw-host0: Unrecoverable error!
Sep 4 15:31:18 komcrapper kernel: [ 213.709303] ohci1394: fw-host0: Iso Xmit 0 Context died: ctrl[60649806] cmdptr[f000e2c3]
Sep 4 15:32:45 komcrapper kernel: [ 260.770006] ohci1394: fw-host0: Unrecoverable error!
Sep 4 15:32:45 komcrapper kernel: [ 260.770018] ohci1394: fw-host0: Iso Xmit 0 Context died: ctrl[20649806] cmdptr[f000e2c3]
Sep 4 15:50:33 komcrapper kernel: [ 804.971557] jackd[6400]: segfault at 1300000050 rip 406b5b rsp 40a75140 error 4