freezing

I have a server that randomly freezes, it runs for an average of 3 days and then freezes, it doesn't reboot or panic, but the keyboard stops working, from the KVM (IPMI) I see no errors, but I do get a video that shows the login default screen asking for login: But when trying to send keys I...

Good morning, I am new in FreeBSD from Debian. I've just installed version 10.1 and I would like to try KDE4. I have problem with very low performance in KDE and in the console also (but not as much as after X starts). Sometimes during not very hard operation (for example ping, cd, or nano...