Make sure you have the show chat icon on for search results. Right-click the top bar (heading bar) of the search results & choose show Chat. That will bring in a new column & when you search you will see some results with the Sunny icon. Browse those sources. Browse seems to work for me.

95+% if browse success will be via those who have chat enabled. For uploads it's much more difficult & even less reliable.

Browse host can be affected by various factors, such as maxed out bandwidth or slots for you or them. Those who are on networks are basically impossible to browse. eg: ip starts with 192.xxx.xxx.xxx or 10.xxx.xxx.xxx (which means they are not properly configured for a start.)

If still problems, make a note of all your settings & delete your LW prefs folder whilst LW is closed; Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)