Phantom incomplete puzzles

[pcuser]

Hi,
On Saturday Sept. 18, did anyone else get charged with an incomplete puzzle that you know is a glitch and can't be found in the recent puzzles page? I also saw some puzzles in the recent puzzles page that said incomplete/retry. When I clicked on retry to see what it was, I received the comment that the puzzle was initiated by another user. Though, I still had 100% completion at that point. I know that there are bugs in the software that can cause these phantom incomplete games. However, I never do the simple things that cause them. Though, there are probably other keystroke combinations I'm unaware of that cause them. Hence yesterday...
pcuser