How to prevent instant messenger programs from crashing your games:
Step 1: Right click on the picture in the task bar (for MSN, a blue a man)
Step 2: Select 'Close', 'Exit', or 'Shut down messenger', whichever is present
Step 3: Launch the game. It will not crash as a result of messenger mesages.
But yeah. An analysis of pre-patch cores is somewhere in the back of this forum. Dig it up and you'll see that, in fact, the Federation has the best overall warp cores (in terms of power/level/what-you-can-actually-fit), the romulans have overall best power, the klingons have best power/mass, and the borg best core hp. Of those, I think having more power in legitimate tests is better.
If you think ANY ships on sfc3 are power-deficient, play sfc1, where moving takes up power. Now that's an education on power shortage.
Alexander