[MrForbes]

I'm running XP in classic on an old 2.4 P4 with 512mb ram, and a two year old 300gb sata drive, and a generic ATI video card.

After a reboot, Inventor opens in about 75 seconds, and loads the partial model of the robot in about 20 more seconds.

Sounds like somethings wrong somewhere with your setup...although I can't begin to imagine what it might be.

I have very little stuff running in the background on my machine (except for that .NET stuff that Inventor requires)