I have this issue, and in my case was caused after the update of our ubnt netwotk to v6.0.3, roll back to v5.6.15 and now all is working normal again.

Big WARRNING DO NOT upgrade 750UP I have problem on network after couple hours devices just crash some reset by watchdog some not.
I kill my network with this upgrade.

+1 The same here in ALL our RB750UP (before 6.30.2), no supout file was posible

I´m downloading the changelog, but since RC16 everytime is the same outdated "routeros_devnote.txt"... someone have the latest changes? Thanks guys

I have also noticed this, if for some reason connection is lost, when i try again the windows are messed up, they are kind of minimized, from the normal size, anybody experienced this ?

Yep, i can confirm that

I upgraded from rc3 to 5, and all my saved sessions were gone, had to create again for every router, except the ones one ver 5x. Is this normal behaviour ? it had happened earlier but I did not bother and created all again, and now again.

Exactly same issue here...

Normis!!!!!!!!!!!!!!!!!

What's new in 6.20rc6 (2014-Sep-08 10:16): *) pppoe client - increase connection timeout to make connection establishment possible on busy pppoe server; *) dhcp server - change default lease time from 3 days to 10 minutes to avoid running out of IPs; *) ipsec - allow binding modeconf address to use...

I'm seeing an issue in 6.18 which is also present in 6.15 (and maybe others) where the TX & RX rates on one switch group (ports 1-5) all go to 0 for one second, then will double for the next second. This was not present in older firmwares (I know it wasn't there in 6.7). i think it is just a re...

How is this possible? (read the cpu frequency reported by the two commands, on the same routerboard) [admin@MikroTik] > /system resource print uptime: 1h49m56s version: 6.15 build-time: Jun/12/2014 12:25:29 free-memory: 8.4MiB total-memory: 32.0MiB cpu: MIPS 24Kc V7.4 cpu-count: 1 cpu-frequency: 30...

Kernel rebooted because of kernel failure

I´ll send supout.rif and autosupout.rif

Hi friends, i have the same error in this v6.10 "ether2 excessive or late collision, link duplex mismatch?" my setup is extremely simple: RB450G - ROS v6.10 ether1-2-3-4 -> RSTP Bridge ether5 -> WAN In the bridge only use de ether1 linked to a RB750UP at 30mts But... the error is logged at...

One question, who is the downtilt of this sector? 90º? Thanks.

Still have unknown switch type on switch #1 on the RB2011.

Same here... this affect the stability or is a simple display mismatch?

We're running our core infrastructure with a CCR1016-12G.

Certainly recommend this to anyone that is looking at replacing or upgrading core devices.

Mikrotik get a +1 for this.

What versión of RouterOS you are using? 100% Stable?