In swapper task - not syncing

[Raghubhushan Pasupathy]

Hello Folks,

We have a 16 processor cluster here running RedHat 6.1 and each machine has 
256 M memory. Everything was fine until I tried upgrading memory to 512 MB 
today. The system crashes on boot and the error message is as follows:

Kernel panic: Attempted to kill the idle task!
In swapper task - not syncing

It is clearly a RAM issue since the node was running perfectly until I put 
the new 512MB  piece in. Can anyone tell me what is going on? Thank you for 
your time,

Raghu
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