Personally I'm about to go offline. But if you post in detail your problems then someone if not me will try to help solve your issue. Sometimes the answer between swapping b/w basic & pro is to delete the LW prefs folder. But sometimes it's technique of use.

Can you give us a total desciption of your set up:
1. OS version? (eg: Windows 98)
2. What firewalls you have?
3. How much ram?
4. Hard Disk space available?
5. Connection type? (eg: dialup, broadband, cable, etc.)
6. Modem & router brand name & model numbers?
7. Where are you trying to connect from (home, school, work, etc.)?
8. What version of Limewire (LW) & Java do you have? (Go to LW's menu Help>About LW...) Will show both LW & Java version.
9. Who is your isp provider?
10. Give us details of your issue & what is the diff between your use & problems faced between basic & pro.