Everything was working fine on v3.27.
Since upgrading to v4.0 my RB450G freezes when there is no data received/transmitted through the router for a while (have not found if this is on a regular basis, i.e., if router is not used for X minutes).
(RB is used at a school.)
During the daytime, everything is working fine.
In the evening I notice that my website can't be reached from home or any other non-local location, ping is not working and it is not possible to login to winbox/telnet/putty.
I need to wait for several (5-~15) seconds to get a respond (the website opens after a refresh + ping is back + it is possible to login to RB) .
Tried upgrading to v4.1, then v4.2, then v.4.4 - no changes.
Any clues or ideas?
Any more information needed for a possible solution ?