2.8.17 dropping all prism associations

This AP worked for half a year with no problems and now once a day it has begun to drop all the client associations on the prism card and does not allow reassociation. There is an Atheros A backhaul in the AP which is unaffected. Is this a known problem in 2.8.17?

edit: prism firmware is 0.3.0/1.3.4 and wireless apckage is wirless not wireless-legacy

Kiira

Please upgrade to 2.9.12 and see if the problem exists…

Regards