Pauses when real-world weather enabled?

I noticed that, once I set the weather to "Real World (Updated), FS2k4 pauses for 30-45 seconds whenever I make a selection in the setup screens. Another 45-60 second pause to start loading up the scenario, but once into the cockpit all is fine.I couldn't find any posts with a solution. Is this common, or should I take my computer out back and shoot it?ThanksMatt