Please see http://support.chess.com/Knowledgebase/Article/View/91/13/why-did-the-clock-times-suddenly-change-the-clocks-seem-broken for more information.
Time Bonus?!
I was playing in live chess a few days ago and after my move, my opponent's time clock counted down from around 31.0 seconds to 19.0 seconds (until he responded). After I had countered, he responded with a very quick move. His clock jumped up to 40 seconds.
And his connection seemed to be good / excellent.
How can his clock jump ahead of 31.0 seconds on the second counter move? If what the link above is saying is correct, shouldn't it be impossible to jump ahead of the last time the clock stopped?
This doesn't seem like lag... If it was a lag problem, wouldn't his clock possibly jump from 19.0 to something like 22.0?
If you know how to detect lag cheating, why dont you try educating the staff? They may blow if off as lag because they can't deterime if it is or isn't. Perhaps if they knew how to detect it, reports of lag cheating wouldn't be ignorned.

p.s. - lag cheating is easy to detect but the issue is not being addressed by chess.com.
Why is that?
How does one detect if an opponent is LAG CHEATING?
If you lose because of time, your opponent must be lag cheating. No other possible explanation.

If you lose because of time, isn't it possible that you used up your time before your opponent used up his?

That sounds like what a lag cheating cheater who cheats laggingly would say, deflecting attention away from the real problem, which is, of course, lag cheaters.

Please see http://support.chess.com/Knowledgebase/Article/View/91/13/why-did-the-clock-times-suddenly-change-the-clocks-seem-broken for more information.
What is being brought to the attention of Chess.Com is:
----> LAG CHEATING. <------------
As explained by "Fleishkoph" of Germany, this is how LAG CHEATING is done:
" A player using a lag switch or lag cheating software tricks the server into adding bonus time to the cheater's clock. "
I've heard about lag cheating many times, but a lot of times I have never been able to discern whether the people discussing it were serious or being tongue-in-cheek ... or sarcastic. Because of that, I had figured that lag cheating and the existence of lag-cheating software was a myth. Can people really do these things?

OF course they can! Every version of windows comes with a special internet chess lag cheating software! Rare is the day I can venture onto live chess and encounter another honest and righteous non-lag-cheater!

I don't play blitz chess because my mind does not move quickly enough, so I am not really aware of these problems. But I cannot understand how a player can find satisfaction in cheating in this way. So he wins on a chess.com game, but what happens when he gets into a real game? In other words, where is the advantage in cheating on the internet?

yeres;
Please see http://support.chess.com/Knowledgebase/Article/View/91/13/why-did-the-clock-times-suddenly-change-the-clocks-seem-broken for more information.

Just out of curiosity, why were you stopping in the middle of a game where you had 18.9 seconds left to take screenshots?

Just out of curiosity, why were you stopping in the middle of a game where you had 18.9 seconds left to take screenshots?
funny I was thinking the same thing yesterday. Also he posted this in three other places.

funny I was thinking the same thing yesterday. Also he posted this in three other places.
Yeah, I saw.

I'm not concerned at all about matters of time bonuses, and am probably trolling a bit, but I was asking because it seems like an extremely odd thing to do.

The poor fellow's only played 11,294 games, so one loss would certainly affect his stats enough to merit whining in multiple threads . . .

I will suspect, that lag cheaters wouldn't bother you much if you respond with quick moves your self and try to checkmate him/her. He/She can take all the time he/she needs than you just calculate everymove and make the move to frighten him/her. I mean lag cheating wouldn't be an issue because the point of chess isn't to play against someone in 1-2 minute games so their time runs out and make blunders while playing just to have the most time... if your too slow to correspond to his/her moves to play 3-5 minute games and move up(or should i say down) the time limit. The point of chess is to play a of game against a friend/enemy/stranger so that you can checkmate him/her in the end. Seriously, if you play 1-2 minute chess just to make your opponent lose by time than there is no point in playing it because your opponent may be making good moves and by the time his time is 00:10 and yours is 1:26 he may have checkmated you due to all your blunders and worries about having the most time.
why is time added when you move fast in live chess?