mac os quirks

I bought a new macbook white today, I'm new to apple. and I found some quirks in the os, not really what I expected , msn messenger wont work, says id or password incorrect. then the trash won't empty. then msn messenger won't quit easily when I switched to corporate account.
and somehow the system begins to freeze a little. slightly slower than start point .
one question : does my system need reinstall ? or this is normal ?
and the stupid trash won't empty all the time

 

thanks a lot for the adium. I'm really new to mac and all this scared me because the piece is brand new.


the trash problem happens mostly when I delete msn files. but the problem is solved now when I used terminal . it just happened for the second time today and this creeped me because it,s new,etc

it freezed when the msn couldn't quit. this reminded me of windows :/

and it took a long time in restarting.


I was just wondering should I reinstall or this all happens usually. . reinstalling creeps me as well. :/