A series of outbursts on Twitter have shown that QPR's summer signing still has an axe to grind with his former employers, but Pardew insists it is time to move on.
“I keep asking myself why does he keep popping up,” Pardew told The Telegraph.
“Why is he doing it? This Twitter thing might be the answer.
“The only focus as a manager of this club is the team and it is a team that is doing exceptionally well and, unfortunately, Joey’s comments take away the positive nature of what we are doing here. It’s a bit frustrating.”
As the Barton issue builds to a head, Newcastle managing director Llambias announced on Wednesday that he would be looking to take legal action against the QPR captain.
However, on Friday morning, Barton tweeted: "Pardew's a good man and manager, I agree with what he has said. Time to keep my peace."
Meanwhile, on the pitch Pardew is preparing his team for the visit of Andre Villas-Boas' struggling Chelsea side in the early kick-off on Saturday.
He admits it is unlikely that he will be able to welcome the return of influential midfielder Cheikh Tiote, who is set to miss his sixth consecutive game with a groin injury.
“I am not going to say he will be fit for next week. We must make sure he is right because he is a very important player to us,” Pardew is quoted as saying by The Daily Mail.
“There is no complication. It is just a little nagging injury which we just can’t get over the line at the moment.
“We certainly do not feel there is a need for an op or to go back to square one. He has not really had a setback. It is just time and it is taking a little bit longer than we had hoped.”
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