Out of Memory

Attach:outofmemory.png

If your server freezes suddenly and you see the above error message, scsi_xfer pool exhausted, it may be a symptom of insufficient memory: your swap disk has been filled.

When this occurs, you have three options:

Increase swap space (perhaps increasing the size of the swap partition ?)
Upgrade to a VPS with more memory
Limit user memory limits with login.conf