When the ipw2200 driver module is loaded with 'mode=2' or if it is loaded, then
turned to monitor mode with iwconfig, rfmon works according to specs..

If, however, the module is loaded but a WEP key is initially assigned - and
subsequently, monitor mode is turned on and the WEP key is disabled (via
iwconfig ethX mode monitor && iwconfig ethX enc off), rfmon mode doesn't work.

I marked this as "minor" since an easy work around is simply to recycle the
module (modprobe -r ipw2200 && modprobe ipw2200) which does the trick everytime.

NOTE : by not working I mean the following :
- I know the WEP key, yet none of the WEP decyphering tools I use (namely
aircrack's 802ether utility) are capable of decrypting the WEP data packets.
- A 'working' rfmon session shows IVs being issued pretty much in sequence and
the KeyID always being the same.. the non-working version shows totally random
IVs and random KeyIds (in the 0-3 range of course).

I am of course willing to provide any additional information should you find it
necessary to resolve this issue.

Thank you,

--Ivan