[SOLVED]powersave problems on wireless-test or ros 4.2

hello,
i have been using n95 wifi sip client for about 2 years now,first problem i noticed when testing wireless-test(rb 532,ros 3.xx with ar5413),but that was some beta,so i waited,but now the same problems appear on different hw (433ah + ros4.2)
what can i see: on 3.x with wireless (not -test) in wireless tables/registration field last activity on my n95 sometimes climbs to 15s or more,power consumption is around 25ma(without lights,measured by nokia energy profiler),all of course in stanby,only occasional broadcasts,when consumption spikes
now with wireless-test: consumption around 290ma,last activity probably never higher than 2s,most of the time around 0,1 or 0,0x secs(as seen in winbox),battery goes down pretty fast
ros 4.2 on 433ah:did not tried everything like on 532,but seems the same,last activity all time low,battery dead before lunch(on older ros it lasts to the night)

conf:eth1+wlan1+wlan2 in bridge,eth2 and eth3 other networks(separate)

tried disabling bridged port on wlan1 (which is 2.4b/g),so no outgoing packets,did not help
only enabling that other wireless package makes the problem show/hide,n95 latest firmware 31.something
there must be some problems with power saving in new wireless drivers,if anyone could help,my n95 battery would appreciate it:)

edit: on wireless-test,the power right after associating is low,problem happens about 10secs after(it is not immediate)
edit2:(on version 4.3)currently being investigated by mikrotik support,one wireless package allready received and that solved it mostly,but still some weird frames flying,but it’s waaaaaay better now,thanks mikrotik!
edit3:on 4.6 it works as expected,so something on the way has changed(maybe it works on previous versions also,i tried only 4.6)
thanks!