Some hardware info.  I'm using a nForce2 board with an ATI Radeon video
card.
Jul  9 23:39:29 gambit kernel: NETDEV WATCHDOG: eth0: transmit timed out
Jul  9 23:39:29 gambit kernel: eth0: transmit timed out, tx_status 00
status e601.
Jul  9 23:39:29 gambit kernel:   diagnostics: net 0cc0 media 8080 dma
0000003a.
Jul  9 23:39:29 gambit kernel: eth0: Interrupt posted but not delivered
-- IRQ blocked by another device?
Jul  9 23:39:29 gambit kernel:   Flags; bus-master 1, dirty 5538(2)
current 5538(2)
Jul  9 23:39:29 gambit kernel:   Transmit list 00000000 vs. f7c40280.
Jul  9 23:39:29 gambit kernel:   0: @f7c40200  length 80000036 status
80010036
Jul  9 23:39:29 gambit kernel:   1: @f7c40240  length 80000036 status
80010036
Jul  9 23:39:29 gambit kernel:   2: @f7c40280  length 80000042 status
00010042
Jul  9 23:39:29 gambit kernel:   3: @f7c402c0  length 8000004a status
0001004a
Jul  9 23:39:29 gambit kernel:   4: @f7c40300  length 800005ea status
000105ea
Jul  9 23:39:29 gambit kernel:   5: @f7c40340  length 800001be status
000101be
Jul  9 23:39:29 gambit kernel:   6: @f7c40380  length 800005ea status
000105ea
Jul  9 23:39:29 gambit kernel:   7: @f7c403c0  length 800001be status
000101be
Jul  9 23:39:29 gambit kernel:   8: @f7c40400  length 800001be status
000101be
Jul  9 23:39:29 gambit kernel:   9: @f7c40440  length 800005ea status
000105ea
Jul  9 23:39:29 gambit kernel:   10: @f7c40480  length 8000004a status
0001004a
Jul  9 23:39:29 gambit kernel:   11: @f7c404c0  length 80000187 status
00010187
Jul  9 23:39:29 gambit kernel:   12: @f7c40500  length 8000004a status
0001004a
Jul  9 23:39:29 gambit kernel:   13: @f7c40540  length 80000042 status
00010042
Jul  9 23:39:29 gambit kernel:   14: @f7c40580  length 8000004a status
0001004a
Jul  9 23:39:29 gambit kernel:   15: @f7c405c0  length 8000004a status
0001004a
Jul  9 23:39:29 gambit kernel: eth0: Resetting the Tx ring pointer.
Jul  9 23:39:44 gambit kernel: NETDEV WATCHDOG: eth0: transmit timed out
Jul  9 23:39:44 gambit kernel: eth0: transmit timed out, tx_status 00
status e601.
Jul  9 23:39:44 gambit kernel:   diagnostics: net 0cc0 media 8080 dma
0000003a.
Jul  9 23:39:44 gambit kernel: eth0: Interrupt posted but not delivered
-- IRQ blocked by another device?
Jul  9 23:39:44 gambit kernel:   Flags; bus-master 1, dirty 5554(2)
current 5554(2)
Jul  9 23:39:44 gambit kernel:   Transmit list 00000000 vs. f7c40280.
Jul  9 23:39:44 gambit kernel:   0: @f7c40200  length 80000036 status
80010036
Jul  9 23:39:44 gambit kernel:   1: @f7c40240  length 80000036 status
80010036
Jul  9 23:39:44 gambit kernel:   2: @f7c40280  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   3: @f7c402c0  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   4: @f7c40300  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   5: @f7c40340  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   6: @f7c40380  length 80000042 status
00010042
Jul  9 23:39:44 gambit kernel:   7: @f7c403c0  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   8: @f7c40400  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   9: @f7c40440  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   10: @f7c40480  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   11: @f7c404c0  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   12: @f7c40500  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   13: @f7c40540  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   14: @f7c40580  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel:   15: @f7c405c0  length 80000036 status
00010036
Jul  9 23:39:44 gambit kernel: eth0: Resetting the Tx ring pointer.
Jul  9 23:39:51 gambit kernel: usb-ohci.c: unlink URB timeout
Jul  9 23:39:54 gambit kernel: NETDEV WATCHDOG: eth0: transmit timed out
Jul  9 23:39:54 gambit kernel: eth0: transmit timed out, tx_status 00
status e601.
Jul  9 23:39:54 gambit kernel:   diagnostics: net 0cc0 media 8080 dma
0000003a.
Jul  9 23:39:54 gambit kernel: eth0: Interrupt posted but not delivered
-- IRQ blocked by another device?
Jul  9 23:39:54 gambit kernel:   Flags; bus-master 1, dirty 5570(2)
current 5570(2)
Jul  9 23:39:54 gambit kernel:   Transmit list 00000000 vs. f7c40280.
Jul  9 23:39:54 gambit kernel:   0: @f7c40200  length 80000078 status
80010078
Jul  9 23:39:54 gambit kernel:   1: @f7c40240  length 80000036 status
80010036
Jul  9 23:39:54 gambit kernel:   2: @f7c40280  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   3: @f7c402c0  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   4: @f7c40300  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   5: @f7c40340  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   6: @f7c40380  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   7: @f7c403c0  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   8: @f7c40400  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   9: @f7c40440  length 80000078 status
00010078
Jul  9 23:39:54 gambit kernel:   10: @f7c40480  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   11: @f7c404c0  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   12: @f7c40500  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   13: @f7c40540  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel:   15: @f7c405c0  length 80000036 status
00010036
Jul  9 23:39:54 gambit kernel: eth0: Resetting the Tx ring pointer.
Jul  9 23:40:04 gambit kernel: NETDEV WATCHDOG: eth0: transmit timed out
Jul  9 23:40:04 gambit kernel: eth0: transmit timed out, tx_status 00
status e601.
Jul  9 23:40:04 gambit kernel:   diagnostics: net 0cc0 media 8080 dma
0000003a.
Jul  9 23:40:04 gambit kernel: eth0: Interrupt posted but not delivered
-- IRQ blocked by another device?
Jul  9 23:40:04 gambit kernel:   Flags; bus-master 1, dirty 5586(2)
current 5586(2)
Jul  9 23:40:04 gambit kernel:   Transmit list 00000000 vs. f7c40280.
Jul  9 23:40:04 gambit kernel:   0: @f7c40200  length 80000036 status
80010036
Jul  9 23:40:04 gambit kernel:   1: @f7c40240  length 80000036 status
80010036
Jul  9 23:40:04 gambit kernel:   2: @f7c40280  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   3: @f7c402c0  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   4: @f7c40300  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   5: @f7c40340  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   6: @f7c40380  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   7: @f7c403c0  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   8: @f7c40400  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   9: @f7c40440  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   10: @f7c40480  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   11: @f7c404c0  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   12: @f7c40500  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   13: @f7c40540  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   14: @f7c40580  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel:   15: @f7c405c0  length 80000036 status
00010036
Jul  9 23:40:04 gambit kernel: eth0: Resetting the Tx ring pointer.
I am not subscribed to LKML, but I do check the archives regularly.
John
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