i have a routeos on x86 pc server.,but reboot frequently ,about 10 times per day.
can how i get the reason?

/system hardware set multi-cpu=no ?

always check the logs, and see what the screen says before/after reboot.

[colorful@MikroTik] /system> hardware
[colorful@MikroTik] /system hardware> print
multi-cpu: yes
[colorful@MikroTik] /system hardware>

I have similar problem
http://forum.mikrotik.com/viewtopic.php ... 90&start=0

int3 pls set multi-cpu=no and see if MT reboot