Firefox open twice

acen

New member
It's kinda silly but Firefox does open a duplicate window that means I click once the Firefox icon on the taskbar but two Firefox windows are running at a same time.
It just happen after I boot up my Windows 7 and after I closed both of them and click again the icon it only back to it's normal condition where there is only one window there.

Anyone can help me???? :cry:
 

My Computer

Computer Manufacturer/Model Number
Asus
OS
Windows 7
CPU
AMD Athlon 64 M320
Memory
2GB DDR2
Graphics Card(s)
ATI Radeon HD 4200
Monitor(s) Displays
14' HD LED BL
Hard Drives
DVD
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