System runs only one week.

[Ignas Galuskinas]

Hello guys,
my system was installed around month ago, migrated from SysCP.

2.6.26-1-xen-amd64 #1 SMP Fri Mar 13 21:39:38 UTC 2009 x86_64
Debian 5.0 64Bit virtual machine.
512 Mb RAM, 512 Mb SWAP.

It runs 16 domains, 50 email accounts.

And each 7-9 day just stops.... No ssh.. After restart everything runs smooth. Seems like running out of resources..

I've never faced this before and it getting me ^@$%&^@...

top - 19:15:28 up 2 days, 6:29, 1 user, load average: 0.02, 0.05, 0.01
Tasks: 128 total, 1 running, 127 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 524504k total, 506152k used, 18352k free, 3712k buffers
Swap: 524280k total, 380836k used, 143444k free, 38500k cached


Any ideas?