Corrupt /proc/interrupts with e1000e

[Kelvin Ku]

I see the following in /proc/interrupts

 55:          0          0          0     338331   PCI-MSI-edge      lan0-rx-0
 56:          0          0          0       2664   PCI-MSI-edge      lan0-tx-0
 57:      47230          0          0          0   PCI-MSI-edge      lan0
 58:        427          0          0          0   PCI-MSI-edge      �
 59:          0        277          0          0   PCI-MSI-edge      �����������
 60:          0          4          0          0   PCI-MSI-edge      lan1

Notice the corrupt entries for IRQs 58 and 59. Sometimes 55 and 56 are corrupt as well. Any idea why this is happening? I am running Fedora Core 12.

$ sudo ethtool -i lan0
driver: e1000e
version: 1.0.2-k2
firmware-version: 1.8-0
bus-info: 0000:06:00.0

$ uname -r
2.6.31.12-174.2.3.fc12.x86_64

This is the NIC:

$ lspci

06:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
07:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection

- Kelvin