It really depends, most of the time it should be alright, but for future occasions try a down load manager like
Get Right at least that way you can be reasonably sure the download will work.
I D/L <img src="/ubbthreads/images/graemlins/beyond.gif" alt="" /> over 3-4 nights on a 56K connection and finished it in 1 night <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />