ETH0 going down: nobody cared...Disabling IRQ #7

I recently purchased a machine with the following specs:

Dimension C521,Athlon 64 X2 3800+ (2.00GHz, 512Kx2)
1GB DDR2 SDRAM at 667MHz
Integrated Graphics
250GB SATA II Hard Drive (7200RPM)
Integrated 10/100 Ethernet
48X CD-RW/DVD Combination Drive
Integrated Audio

I also purchased a second PCI ethernet adapter so that I could use the
machine as a router. Here are the details of the ethernet adapters
from lspci:

04:07.0 Ethernet controller: Broadcom Corporation BCM4401-B0
100Base-TX (rev 02)
04:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)


The install of Etch went smoothly and everything works great, except
that a couple times a day I see this error:

irq 7: nobody cared (try booting with the "irqpoll" option)

Call Trace:
<IRQ> [<ffffffff802a4c07>] __report_bad_irq+0x30/0x7d
[<ffffffff802a4e41>] note_interrupt+0x1ed/0x22e
[<ffffffff802a434e>] __do_IRQ+0xc7/0x105
[<ffffffff80210381>] __do_softirq+0x5e/0xd5
[<ffffffff8026401f>] do_IRQ+0x65/0x73
[<ffffffff8026210d>] default_idle+0x0/0x50
[<ffffffff802589d1>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff80262136>] default_idle+0x29/0x50
[<ffffffff80245433>] cpu_idle+0x95/0xb8
[<ffffffff8026c9f6>] start_secondary+0x43e/0x44d

handlers:
[<ffffffff8807d233>] (b44_interrupt+0x0/0xaa [b44])
Disabling IRQ #7



The integrated ethernet adapter is using interrupt 7, and at this
point I lose my network connection.

Here are the contents of /proc/interrupts:

CPU0 CPU1
0: 558459 2341 XT-PIC timer
2: 0 0 XT-PIC cascade
5: 6470 179 XT-PIC ohci_hcd:usb1, eth1
7: 7016 571999 XT-PIC eth0
8: 0 0 XT-PIC rtc
10: 2788 186 XT-PIC libata, HDA Intel
11: 0 0 XT-PIC libata
15: 0 1 XT-PIC ehci_hcd:usb2
NMI: 65 50
LOC: 560806 560785
ERR: 7844
MIS: 0

I am currently booting with the following options: noapic acpi=off
nofb. I tried booting with irqpoll, but that caused more problems.
Any help with this issue would be greatly appreciated.

.

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