Arduino 1.0 application running etremely slow

I am using Arduino UNO wuth Aurdino 1.0 application, but the application responds in dead low speed even on core 2 duo 4 gb. and I have tried it on another pc also, there also itz working very slow. can anyone identify the problem... Thanx

Do you happen to have a bluetooth adapter on your system?
If so, disable it and try the IDE again.

Several people have run into problems with the way the IDE polls serial ports and bluetooth adapters.

Excelente... I'm using a DELL Latitude, just switched off the wireless adapter and it runs like the wind.