High load on Linux machine (no IO, no CPU, no Swap)

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http://serverfault.com – i am experiencing a high load situation on a linux system, which was PXE booted into a initrd Ramdisk. The system is essentially idle. The system is very responsive (as if no load), yet shows a load of ~4. Anyone might have an idea to corner the issue? The logs show nothing... [root@node2 ~]# uname -a Linux node2 2.6.32-042stab072.10 #1 SMP Wed Jan 16 18:54:05 MSK 2013 x86_64 x86_64 x86_64 GNU/Linux [root@node2 ~]# w 11:09:25 up 20:20, 1 user, load average: 3.99, 3.97, 3.91 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 11:04 0.0 (HowTos)