card resset, clients not back

[Tomas Charvat]

gereting it happen to me few times with Cvs 14 days old, that this msg
apeared in syslog

Aug 28 00:37:15 nest kernel: NETDEV WATCHDOG: wlan3: transmit timed out
Aug 28 00:37:15 nest kernel: wlan3 Tx timed out! Resetting card
Aug 28 00:37:15 nest kernel: wlan3: CMD=010b EVSTAT=0000 OFFSET0=0000
OFFSET1=0000 SWSUPPORT0=8a32
Aug 28 00:37:15 nest kernel: wlan3: scheduled card reset
Aug 28 00:37:15 nest kernel: hostap_pci: wlan3: resetting card

and client wasnt able to connect back to ap.... usualy manual card reset
solve the problem,
but may be he is able to connect back in few mins.
anyway there is not msg about auth or any other action in syslog after that
error
and afetr 8 hours client was back online

my Fw is 1.7.4/1.1.1

and i must say it happen only on one if 5 Aps i have

regards
tomas