No ss, but I had two serious misclicks so far.
1. I was playing 5/10 limit holdem, and got two black aces on the button, a normal opponent raised preflop, I reraised and he capped, so it was two of us seeing the flop of 762 two spades and a diamond. Again opponent bet, I raised, he reraised and I capped. Turn came T of spades, he bet I raised, he reraised and - given the preflop action and my opponent's style I thought I was well ahead, he probably had KK or QQ with a spade - I wanted to cap, but I misclicked on fold because the buttons were so close on that particular sw. The pot was around 160$ at that point, and I knew this opponent, he most likely drew to 2 outs on that river.
2. I played Desert Treasure at a Playtech casino, 20 lines, 0,5$/line, so 10$/ spin, and I accidentally pressed betmax to spin for 100$. Luckily I got back something like 80$ on that spin.