2007 SP4.0 Frequent crashes?

Hi folks;

We just upgraded to 2007 two weeks ago, immediately installed SP4.0,
and started using it more frequently just this week.

I'm noticing frequent crashes on this particular version; two today
for example, both in assembly mode. We were running 2006 SP4.0 prior
to this and I can't remember that last time that crashed here.

Anyone else having this problem?

Regards,
-Dave Adams-

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