Cardiff have sacked one member of staff and disciplined another after reports that their starting line-up might have been leaked to Crystal Palace ahead of last Saturday's Barclays Premier League clash.
Caulker said: "To be honest with you, there have been problems like that all season where certain things have been leaked.
"For me, it is frustrating. We need to focus on getting things right on the pitch, not what's going off the pitch.
"I will be telling the boys that we need to get performances in and get results, not concern ourselves with off the field issues.
"It has obviously come from somewhere. That's down to the gaffer and the staff above him to sort stuff out, and we can just focus on playing football.
"A lot of stuff has been going on off the pitch all season, and that has been highlighted in the press. It is important we all ignore all that stuff. Our performances have not been up to scratch of late.
"As far as the boys are concerned, we back ourselves. We've had the support of the fans all season, we've had the support of both managers we've worked under. I find it hard to see where it could be coming from.
"You have a bit of banter with your ex team-mates and friends in football. Until the Premier League have investigated it and got to the bottom of it, I certainly won't be pointing any fingers."
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