That 100-result limit has actually been in place for a while now. I've tweaked and tuned the software and server to get more performance out of the current hardware to cope with the current rush. Let's hope it is enough to get us through release day.
That's good to hear, It was always a shame to see the forums go down at the most critical times!
And yes, fingers crossed they will cope with release day. Hopefully the activity will be kept from getting too high by the fact that everyone will be busy playing GT5.