[CentOS] Server freeze

Hi all.

Two days ago a server got freezed, not responding at console or by LAN.
I noticed both caps lock and scroll lock LEDs at the keyboard flashing.

I think this could be a hardware problem, but I don't recall where I
read about this flashing indicators.

The hardware is an Intel based white box PC running CentOS 3.5 fully
updated.

Anybody knows what the flashing LEDs means?

Regards.
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