DivX Movie Doesn't Play! PLS HELP!!

I hav got a problem playing my divx movies.when i try playin my movies on the divx player the movies gets stuck and plays...it doesn’t play smooth .i don know how to explain it properly.actually this does’nt happen wid all the movies .only wid some movies.the movie while playing gets stucks and loops again and again and then it continues sometin like keeping repeat points A and B!pls help me!
thanx!