Limewire CPU

[looseswing]

Limewire is taking up all my CPU whenever I open it and do anything with it. I just opened it and did a search and it took up 100% CPU. It also slowly increases the amount of memory it uses so I have to restart the program every now and then because it eats up my commit charge. Last, once it gets to 100% CPU, even if I close it down the computer stays at 100% CPU although the commit charge does go down. The programs that use the 100% after limewire is shut down keep on switching in the task manager. I have a toshiba satellite from last year. I did a spyware and virus scan and nothing came up. I have limewire pro 4.12.6. Any help would be greatly appreciated.