Everytime when you send file from gadget to ur computer via Bluetooth, windows will not allow to receive that file, a windows notification will appear to ask agreement from user. If you agree that file will store to ur harddisk.
If u transfer 1 file I think this is not a problem, but if you want transfer houndreds files? This file sending will take very long time.
With 1 trick you will not see notification windows eveytime receive a file
1.    turn on Bluetooth at ur computer and ur gadget too
2.    after Bluetooth from computer and gadget active, try send a file from ur gadget to ur computer. When notification windows appear, click balloon
3.    and then Bluetooth pim item transfer access authorization will opened. Uncheck allow access box, and uncheck in the front ( for the current request only )
4.    check the option ( always allow this device access to my computer’s pim transfer service) and then click ok
5.    and then file transfer process will running

after this when you send a file from same gadget , you will not see notification again!