Here is the story:
------ Starting Hand -------
Dealing pocket cards: [Ks, 3d]
nihilist calls
ando7792 folds
jimmybad calls
brammie calls
Randi calls
fiendishnaug folds
simc1978 sits out
simc1978 folds
pTm checks
Dealing flop: [Kh, 2c, Th]
pTm checks
nihilist checks
jimmybad checks
brammie bets $555
Randi folds
pTm calls
nihilist folds
simc1978 sits in
jimmybad folds
Dealing turn: [7c]
pTm checks
brammie bets $468
pTm calls
Dealing river: [8h]
pTm checks
brammie bets $1873

"Here I needed some time to think. Before the time was over I decided to call. I clicked on teh call button and look what happened."

pTm sits out
pTm folds
brammie wins main pot 4194
pTm calls
brammie wins main pot 1873
------ Starting Hand -------

First lost the pot because I reacted too slow and the call was accepted but we didn't see the hands. My question: was it a lag or a bug?
By the way I would have won the pot without the problem.