3123 has been rock solid
4191 never crashed, but had some problems
when printing "\rsome long string" in a terminal
4349 causes X (and possibly the machine) to hang.
verbose error reports do not seem to yield any
interesting information, but I'd be happy to provide them
The 'hang' looks like this:
monitor flickers twice, then looses sync permanently.
<ctrl><alt><bspace> does not return the monitor to a usable state.
These behaviours are replicatable across different kernels, stock or RH-stock, through RH 7.3-9.
Supermicro P5DA8, dual 2.8Ghz xeon, 1G
This happens with NVAGP set to 0,1,2, or 3.