Try deleting your LW preferences folder; instructions here: Fixes for Limewire

If it still happens, after you open LW go to Task manager & see if there's more than one Limewire listed.

Also check your video card & tell us which one you have. See if there's any updates for the drivers available.

Can you give us a total desciption of your set up:
1. OS version? (eg: Windows 98)
2. What firewalls you have?
3. ram?
4. HDD 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...)