Munster head coach Rob Penney questioned his team's attitude after their surprise 29-23 loss to Edinburgh in the Heineken Cup clash at Murrayfield.
Munster had touched down in the Scottish capital fresh from their impressive 19-15 win over Leinster last week but crashed to an Edinburgh outfit which had already lost five out of six of this season’s RaboDirect PRO12 games.
"Edinburgh are a good side and deserved their win. We are ruing some poor mental preparation because you don't change from one week to the next like that physically in any way,” said Penney.
“Our mental application was nowhere near what it needed to be.
"I can't take anything away from Edinburgh at all. They nullified our threat, defended well and took their opportunities.
"Laidlaw kicked beautifully and the proof is in the pudding. If you leave after 80 minutes and you are behind on the scoreboard then you don't deserve to win.
"We weren't good at all but that's not taking anything away from Edinburgh. We were not allowed to be good."
Meanwhile, Edinburgh head coach Alan Solomons believes his side is still some way off being a competitive unit.
"We weren't good at all but that's not taking anything away from Edinburgh. We were not allowed to be good." - Rob Penney
The Gunners boss watched his side survive a first-half battering yet still lead 19-17 at the break before snatching a victory with Tim Visser's late try.
Nineteen points from skipper Greig Laidlaw kept them competitive as they made the most of their meagre opportunities to shock Penney's team.
However, Solomons said: "We know we have got a long way to go. We are under no illusions on that.
"But to me, it is important that we keep improving week by week. It was great for the guys that they got that result. It was a real boost to their confidence.
"Of course that will help them take their next step up. But what we have been saying is that we need to be performance focused - not result-focused.
"If we get our performances right, and we have been so close, we will be okay.
"When we go through the match review on a Monday, we have been saying to the guys you are so close you won't believe it.
Scotland scrum-half Laidlaw was named man of the match as he also took himself beyond 500 points for Edinburgh.
Solomons added: "I don't want to take anything away from anyone in the team because I felt everybody played well. But I thought Greig led the side really, really well. He has a very good temperament and showed that with his kicking to the posts."