10.1-STABLE one week old from svn - random hangs

[Wojciech Puchar]

>>
>> seems like a deadlock. Anyone know that problem. How to trace it
>> down?
> Looks like I have same problem sometimes.  And you could not run any
> new process, you could not login on console, but you could switch
> virtual consoles & if "top" is running on one of them, it doesn't hang
> itself, right?

yes. ping works. all hanged process waits for I/O infinitely. no I/O is 
going.

strange sometimes it does not happen WHILE performing heavy I/O, but 
after.


some kind of deadlock.