Comment 10 for bug 758384

Brand new hard drive in my Toshiba. Installed Natty Beta-2 and all updates to 23 April.

Used wget to copy over my Music directory.

What happens: every few GB, the system hangs for 1-5 minutes; the wget activity pauses in mid-transfer, and the screen and keyboard are unresponsive. The fans are running at a moderate speed. Eventually, the fans slow down and finally wget starts up. The 40gb transfer eventually finishes, but the system responds very slowly to keyboard and mouse input. Finally I get the option to reboot from the upper right menu. I click on it. The next morning, the reboot hasn't happened yet, though it looks as though the system is almost down - blank screen, unresponsive keyboard, but still a power light.

I do a hard reset and "everything seems OK".

In the log, lots of ata soft reset / lost interrupt messages e.g.

Apr 24 06:42:16 temuko kernel: [54591.008051] ata2: lost interrupt (Status 0x58)
Apr 24 06:42:16 temuko kernel: [54591.012007] ata2: drained 65536 bytes to clear DRQ.
Apr 24 06:42:16 temuko kernel: [54591.088075] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
Apr 24 06:42:16 temuko kernel: [54591.098936] sr 1:0:0:0: CDB: Get event status notification: 4a 01 00 00 10 00 00 00 08 00
Apr 24 06:42:16 temuko kernel: [54591.098983] ata2.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0 pio 16392 in
Apr 24 06:42:16 temuko kernel: [54591.098987] res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
Apr 24 06:42:16 temuko kernel: [54591.120572] ata2.00: status: { DRDY }
Apr 24 06:42:16 temuko kernel: [54591.131328] ata2: soft resetting link
Apr 24 06:42:16 temuko kernel: [54591.308475] ata2.00: configured for PIO0
Apr 24 06:42:16 temuko kernel: [54591.308878] ata2: EH complete

I might try re-installing 10.10 on one of my spare drives to see if I get the same behaviour.