My new Crucial memory craps in Cas 2

[Spidey]

It runs great when running cas 3 even @ 145Mhz
but try and run it at cas 2 even at 133Mhz and it crashes during Diablo, Quake3, Unreal Turnament etc.
Did I get a bad stick ya think maybe?

When I first installed it today I got error beeps on boot up.
1 long and 3 shorts then next time it was 3 shorts. Put my Micron ram back in and its fine. Put the Crucial back in and I got it to boot. Thats when I tested the memory in cas 2 and started getting the problems.

My question is, has anyone heard of this before?
The stick I bought is 256meg 133 Cas2 7.5ns.
Thanks guys.

[Tacoman667]

Have you tried upping the IO voltage .1? That may help you out. Crucial seems, to me, that it needs a little bit more of a push but at the +.1 voltage, it does an outstanding job.