Question: kernel connection lost

I was running the BirthdayPi procedure that was somewhere here in mapleprimes. 

I replaced the string evalf(.. _BigPi   with evalf(Pi, 1000000) and ran the procdure.  I hit the stop hand because it was taking too long then I ran it again with a different number.  shortly after it said kernel connection lost. 

I just upgraded my memory from 1Gb to 2.5 Gb (ie I removed 2 of the 4  512 Mb chips and replaced those with 1 Gb chips).  Could that have something to do with it?

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