Hi,
I upgraded RB750 with newly published RouterOS v5.0 and here are some problems that I have with it.

In winbox (I have last version) CPU is 100% all the time.
In interfaces and PPP I don't see anything. After some time I get at the middle of this window mesage ERROR: Timeout

I can't upgrade firmware from 2.28 to 2.33, I give command and it says to reboot to install it but nothing happens.

This is all for now that I found with newly published 5.0 ROS

Have anyone similar problem and some solution for this?

Regards,
Sasa

I have the same problem with upgrading the firmware. Already written to support. I suggest you to do the same.

Try this before firmware upgrade: HTH,

Got problems on 5.0 on RB1000.

The router runs ok for a couple of hours, but after 3 ou 4 hr running OK, it starts the cpu starvation (100%) and all PPPoE tunnels goes down.

Didn't able to downgrade, or even uninstalling a 5.0 package (tried uninstall ipv6 for example).

All tries is followed by:

dec/31/2001 22:00:01 system,error,critical System rebooted because of kernel failu
re

Send the supout and waiting for an emergently answer, because we are unable to downgrade and having heavy troubles at my core network.