weird trouble

[Dave Cottingham]

I'm using hostap with a Linksys WMP11, and I'm having some weird
trouble.  Basically, everything works, but when transferring a large
file from elsewhere to my computer, the transfer stops happening
somewhere in the middle, hangs there a good long while (I mean the
transfer hangs, not the computer), and then gets a timeout.  This
problem does not appear when the transfer is from my computer to
elsewhere.  Or at least it's enough better that I haven't seen it yet. 
The problem is severe enough that it's basically impossible to transfer
a megabyte file to this machine via wireless.  I do get some suspicious
looking stuff in dmesg, though not at a great rate (typically a few
messages per hour, sample below).  Haven't seen anything funny in
/var/log/messages.  I haven't managed to turn up any similar sounding
problem in a random perusal of the list archives, but has anybody seen
anything like this?  Or have a clue what it is?

Some details below.  BTW, in my desperation I've tried replacing hostap
with wlan-ng and got the same results.

Any clues gratefully received,
Dave Cottingham

Card: Linksys WMP-11, PRI 1.0.5, STA 1.3.4
Hostap: 2002-10-12
Infrastructure mode, WEP, 64 bit encryption
Wireless router: Linksys BEFW11S4 ver. 4, firmware 1.44.2 (Linksys says
	that's the latest)
Redhat Linux 8.0, kernel 2.4.18

/proc/net/wireless says:
Inter-| sta-|   Quality        |   Discarded packets               | Missed
 face | tus | link level noise |  nwid  crypt   frag  retry   misc |
beacon
 wlan0: 0000   72.  199.  156.       0      0      1      0
208373        0

A sample of suspicious looking stuff from dmesg:

wlan0: prism2_rx: dropped non-data frame (type=0x01, subtype=0x09)
wlan0: RX status=0x2000 (port=0, type=1, fcserr=0) silence=1 signal=36
rate=149
rxflow=0; jiffies=20134244
   FC=0x0095 (type=1:9) dur=0x0600 seq=0x3850 data_len=54
   A1=25:a7:1a:aa:1a:aa A2=00:06:15:e7:15:e7 A3=00:06:15:e7:50:38
A4=39:0d:53:d5:4e:cc
   dst=00:06:25:a7:1a:aa src=00:06:25:e8:00:36 len=54