1. Please keep any accusations of cheating off of the main forums. Use the Report Abuse function for that (click on the 'Help' link next to the 'Logout' link at the top of the page).
2. The situation you mentioned isn't sufficient cause for suspected cheating. A lot of people come onto the forums because they don't know how to make the 50-move or threefold repetition draws work. A lot of people might also not know about such options. Others might know about them, but think they might be able to win on time if they think their opponent doesn't know how to make a valid claim for such draws.
I have played a tournament, it is still going because the first 2 players:****** and ******* were both using software, the game between them is more than 100 moves, a clear draw for humans, but softwares don't understand it, and play till the 50 moves!