Now for the most serious evils. Because that makes the pad to an annoying companion for PC users life. I own 2 of these pad's (bought at the same time) and have for about 2 years, the exchanged one against the other, because these small bubbles bursting at the bottom, accumulate as small sausages and crumble under the pad and after 3 to 4 seem weeks as loose chippings on the road and forcing the pad to slip. Moreover, just be this unpleasant circumstance the bubbles at the point where the ball of the thumb rests less and just now no one more is it available. It is in both pad's the same problem and now I have to put it mildly, the sick of regularly after 3 '4 weeks to free the table and the pad of the silicon remains so that the pad will stop again! I have a glass table (ie the most optimal for a pad with silicone or rubber base) and therefore very annoying that probably just in such circumstances, the mouse pad regularly makes such problems. That did not occur the problem even with the previous speakers, is beyond me.