Are you really sure that it was more than 10414 ?
Currently i'm checking my log files to see if there is a bug, will post an update after this.
~500 shares cant be added to my account with out i mined.
I refresh my account page every 1 minute with script. so that i always be sure that my shares added & also to check my balance.....
It looks like you loaded stats page at 6:40 and posted in this thread at 6:44, then you are reloading the page once per minute since 6:49.
As of 9:28 UTC you had submitted a total of 10818 postworks since last reset, including all stales and invalids, so the counter is correct at this time, no shares were lost.
If you saw 10999, then there is some bug in my statistics page that I have to find. Working on this.