Ok, wasn't aware of that.
I did a full reset yesterday, i'll monitor the next days for the behaviour.
Other question is that now i always have this log entry flooding the log:
Apr 1 23:46:32 wlceventd: wlceventd_proc_event(508): eth6: Disassoc xx:xx:xx:xx:xx, status: 0, reason: Disassociated...