well today i took the exam and the proctors were a lot better...but just my luck there was a problem with the air conditioning unit and so when I got there feeling all prepared and confident, I soon lost all positive feelings when I saw people screaming at the proctors saying "I can't take a test under these conditions," etc. etc. It honestly sounded like jackhammers, as I guess repairmen were working in the floor above, so loud clanking would start and stop.
The proctors said they would generate an incident report for anyone so that if we started to take the test and found the noise to be too disrupting, then we could stop and have the scores cancelled without schools finding out that they were canceled. the catch was that we'd have to tell them BEFORE the end of the exam and the disturbance had to keep going on during the point when we decided to opt out... the proctor recommended we not do it but the three of us who were about to start decided to go ahead because otherwise we'd have to reschedule for weeks away from now...and I personally am going on vacation tomorrow and didn't want to reschedule.
the noise continued through the AWA section and half the math section, but then stopped. the math section was terrible, and to be honest i don't think the noise had anything to do with my performance since i had both ear plugs and headphones on to block out noise.... however, since the noise stopped i figured it would be too late to tell the proctor i didn't want to continue.
so that's that. the proctor also said the testing center shut down last november due to concerns about noise construction. there were people yelling who had just finished their tests (and clearly did badly), nervous energy all around, not to mention loud banging and still the same proctor with the LOUD LOUD voice (although he was less chatty this time during the test).
what a mess - NEVER TAKE THE EXAM AT THE BROOKLYN CENTER.
i ended up with a 600. was averaging a 640-690 on GMAT prep tests, so this was a disappointment, but to be 100% honest I don't think it was due to the noise.
i'm pretty bummed - hoped to get in on late round applications for 2008 but given the schools I want to apply to (UCLA, USC, NYU, Columbia) I think that would be a waste of time.
Thanks for responding to my original post; wish I had followed everyone's advice. Although sometimes we can't blame external factors on our final scores. There's always round two....