Comment 66 for bug 279102

Facing similar problem: Dell Dimension C521, Ubuntu 9.04 64bit, Fresh Install.

Linux DELLC521 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 19:25:34 UTC 2009 x86_64 GNU/Linux
04:07.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
00:05.0 VGA compatible controller: nVidia Corporation C51 [GeForce 6150 LE] (rev a2)

Happens only during heavy file transfer && (( moving windows ) || ( scrolling in Firefox ))

Transfering large iso files across using scp. scp reports "stalled" but continues. No md5sum errors detected in the transfered files!

"Cool and Quite" (suggested above) did not help.

"Sleep and Wakeup" (suggested above) did not help. The computer never woke-up.

"Turning off Compiz" (suggested above) seems to help. Unable to reproduce behavior after this.

Hope this helps.