Just been trying out the blur demo on multiplayer and can say that if that is HONESTLY how the multiplayer works in the main game then it is a REAL shame!
I sat for 40 minutes before playing online against someone and then had to wait for a day and age before another race started once that one was over. The only reason I sat that long was because of the competition open on PSN to win a BMW by playing a game.
I've put blur on my rental wish list from lovefilm and will see if it is any different once they send that out... I hope for the games sake that it is!
I know that demo's are not the finished product and should be taken with a splash of "meh - they'll fix that"-ness but developers and publishers need to make sure that they don't turn gamers off completely!
EDIT: Maybe I was a little harsh. Just been playing it again and turns out that it does work better some of the time... I'll await the rental to see for sure.
51 minutes ago