i been using optimum online since it first came out here in long island and the first few years there was no problems with them. but around 2003 they started blocking and holding bandwidth for alot of the popular P2P programs out now. i had huge problem with WINMX and Optimum Online and i found that you need to use certain ports for UDP and TCP to access winmx peer perfectly...

with limewire pro for me. the downloads recently got stuck around 1-2 KB/s, what i did to fix that error was reset my settings to default and completely restarted limewire. but make sure you backup your incomplete files

go to Options and anywhere in the options section there is button twards the bottom in the middle that says "restore defaults" and click that and completely close limewire and restart it and it will run the "first run setup" to re config the program.

thats what i did and it worked my downloads are back to normal.
like i posted before i think the problem here is a windows update that does somthing to the limewire settings or registry entries.

hope that help...cause it did for me...