Maybe the other computers running with LW are using all the bandwidth so your computer is starved of enough bandwidth. You should get turbo within a minute or 2 after opening ... depending on how long it takes to load on your system. Try deleting your LW Preferences folder whilst LW is
closed; instructions here:
Point #2 & 3 in Fixes for Limewire (sample image included.) And see if that makes a difference.