EX7000, issues after firmware update

Hi, since last updates I have some issues with my access point. After some days (10-20) of uptime, it appears unrensponsive.... I have to switch off and on to let it work again. I've been having it for more than 1 year and I've never had these issues, it always had longer uptime (even 4 months) without any problems. So I'm sure it is related to the firmware upgrade. Anyone had similar issues?