getting TX errors in wifi0 interface

Hello,

While using D-Link DWL-G520 PCI wireless card as a wireless access point
using Madwifi driver on Debian Etch, kernel 2.6.17, I notice that wifi0
interface is showing some errors:
~# ifconfig wifi0
wifi0 Link encap:UNSPEC HWaddr <long address here>
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:40489 errors:0 dropped:1 overruns:0 frame:51422
TX packets:86684 errors:258 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:3704588 (3.5 MiB) TX bytes:128189426 (122.2 MiB)
Interrupt:201 Memory:c8aa0000-c8ab0000

~# ifconfig ath0
ath0 Link encap:Ethernet HWaddr <long address here>
inet addr:192.168.5.1 Bcast:192.168.5.255 Mask:255.255.255.0
inet6 addr: fe80::215:e9ff:feb3:ef25/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32968 errors:0 dropped:0 overruns:0 frame:0
TX packets:85281 errors:0 dropped:6 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2445456 (2.3 MiB) TX bytes:125471425 (119.6 MiB)


and as shown, ath0, the wireless device, is working okay. Should I be
worried about the errors shown by wifi0?

The PCI wireless card is listed as:
01:02.0 Ethernet controller: Atheros Communications, Inc. AR5212
802.11abg NIC (rev 01)

thanks,
->HS