iwi loses ssid

Hi.

After I upgraded to Jul 1 CURRENT my notebook's iwi adapter started work 
  unstable. It loses carrier. When I take a look at ifconfig output I 
see a strange ssid. After I make ifconfig iwi0 ssid myssid, everything 
is recovered. Time between ssid losses is accidental. Sometimes minutes, 
sometimes hours.

PS. While I wrote this message it resets ssid again to 
ZXDSL531BII-1A0EE6. It looks like the ssid is always the same.
-- 
Dixi.
Sem.