I have to agree with a lot of what MK says. When Lambert joined he was fresh and full of energy and enthusiasm. I was genuinely excited, but after McLeish who wouldn't be?
I don't know what changed. Whether the lack of funds broke him down or the lack of faith from the pundits in the youth, but he has changed a lot. His shopping list, his energy, his tactics, all have changed. Maybe it's the pressure? Let's not forget that before us, he only had about an hour's Premier League management experience.
Is he happy? I think it's a mixed bag. He has a great salary, a long contract and he's managing in the Premiership. However he has lost most of the fans, and maybe even the dressing room. I think he loves the job and has tried his best, but the task is too big for him. Something tells me if a Burnley or Leicester came in for him, he would be keen to go do the same job, but with a new chance (a la Pardew). But I firmly believe he has to go. Given funds and maybe a Championship team, he will succeed but I think this is just a bit much for him now.