with -current, i have dlink dwl-650 card working well in a pci cardbus
bridge of unknown origin. however i have noticed some strange behaviour
when a linux box with a wireless card comes up in bss mode -- it 
knocks the dlink card off the air, and iwconfig gives invalid
argument complaints untill the card is removed and re-inserted.
a netbsd laptop with the same wireless card in bss mode causes no
damage.

unfortunately i'm not physically near the box now so i can't 
reproduce the problem -- i can try to do so later and file a pr
if it would be usefull.

cbb0 at pci0 dev 13 function 0: vendor 0x1180 product 0x0475 (rev. 0x80)
cbb0: interrupting at irq 5
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 2 device 0 cacheline 0x0, lattimer 0x20
pcmcia0 at cardslot0
biomask f965 netmask ff65 ttymask ffe7
pcmcia0: CIS version PC Card Standard 5.0
pcmcia0: CIS info: D, Link DWL-650 11Mbps WLAN Card, Version 01.02,
pcmcia0: Manufacturer code 0x156, product 0x2
pcmcia0: function 0: network adapter, ccr addr 3e0 mask 1
pcmcia0: function 0, config table entry 1: I/O card; irq mask ffff; iomask 6, io
space 0-3f; io16 irqpulse irqlevel
wi0 at pcmcia0 function 0: D, Link DWL-650 11Mbps WLAN Card, Version 01.02
wi0: 802.11 address 00:40:05:de:bf:a0
wi0: using RF:PRISM2 MAC:HFA3841 CARD:HWB3163-SST-flash, Firmware: 0.7 variant 6