Sony VGN-S170P - Manual (Page 183)

Why is my Bluetooth connection slow?
 The 2.4 GHz radio frequency used by Bluetooth and wireless LAN devices is also used by other devices. Bluetooth
devices incorporate technology that minimizes interference from other devices using the same wavelength,
however, communication speed and connection range may be reduced. Interference from other devices may also
stop communication altogether.
 Connection availability is affected by distance and obstructions. You may need to move your computer away from
obstructions or closer to the device to which it is connected.
 Identify and remove obstacles between your computer and the device to which it is connected.
 Please note that due to limitations of the Bluetooth standard, large files may occasionally be corrupted during
continuous transfer due to electromagnetic interference from the environment.
Page 183