Arduino Software running slow on windows 7 64 bits

The software is running very very slow, if i try to modify the port in the menu it takes aroximately 3 to 4 minutes to open the menu, the inicialization takes up to 3 minutes and always give me an error message "An error ocurred while starting the application". On ubuntu I could run it normally without any problems. Does anyone had the same problem and had it fixed?

http://arduino.cc/forum/index.php/topic,118440.0.html

It worked here! Thanx