TBS5220 hangs sometimes

[WimKlim]

Sometimes TBS5220 hangs : The picture freezes and if I change the channel then the picture is black and there is no sound.
If I remove the stick from the USB port and plug it in again, then the stick is again working (at least up to the next freeze).

I use DVB-C, Windows 7 Pro 64 Bit, TBSViewer or SmartDVB, driver version 1.0.0.5 .