There is still a bug in RouterOS 6.12 that was introduced in RouterOS 6.11 regarding bridge filter rules. I've found if you create bridge filter rules specifying an interface, the interface shown will go into hidden/minimized state in Winbox. The interface is still there and bridge filter is workin...
In my RB1100AHx2 with 500 pppoe connections, i´ve seen 2 times a big drop in the troughput in clients interface, after i reboot, everything back to normal.. some hours after when i changed a ARP entry, the same occours, reboot again.. back to normal.. i will downgrade to 6.7.. :( +1 No add static A...