Hmmmm... after reading this discussion for a while, I think that there
really might be a serious bug in the linux-kernel somewhere. It is totally
possible that is shows up only in a certain environment, what is the only
constant thing in the tests that were made (What services do you use?
What other machines are connected to the network? Do you use non standard
(eg. self written) programs?.....).
Matthias
PS: Do you have 'evil' users? It is fully possible for a normal user to make
a linux machine unuseable (the system still lives, there are no entries
in the log files and there is no system response (ok, maybe if you wait
a few hours for your echo....).
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