@ sayumi
YES!!!! it's really hard to make true friends in uni, unless you choose to join clubs and being really active.
for me, all the clubs i joined have meetings during night, and was far from my rez, so i ended up not going. and i have a lot of high school friends that r in the same uni as me (such as my two rommies, and there r 10 more ppl who live in the same building with me) so i just need to talk to my old friends, and this prevent me from having the motivation of meeting new ppl. i know one visa student, cz he has new friends here, therefore he had to force himself to make friend
also, all my classes are huge sizes, 300+. we take the seats randomly every time. and after class, ppl just walk to their next class. so there is no chance of talking to ppl and make friends..