Permanently inoperable!

For almost 4 months now I use this mouse from Logitech.
Although you always work performed their service, not always satisfactory.
Initially tratt on the problem that the cursor regardless of the subsurface jumped, as already described in other reviews.
Alone a plain white sheet of paper work made possible with the mouse, but this can now happen easily.
For this, the mouse shows after 4 months of use already wear of the switch.
The mouse wheel does not work properly as a button, and the left mouse button starts arbitrarily Double-click to execute.
Since I now again has set a new mouse to me, I advise you vornerein the purchase of this product from.