Started off really well, then just started losing all of a suddent halfway through the season. The last few games have been horriffic, 6-0, 5-1 and 8-1 losses to Brisbane, Gold Coast, and Adelaide repectively. Considering selling off most of my players and starting fresh next season.
Just note that, in FM11 more so than any previous game, the "gelling" of your team is crucial. Frequent and numerous purchases can disrupt team cohesiveness.
In my Sunderland game, I try to introduce no more than 2-3 players at a time into my team. I also place a massive emphasis on how they will fit into my team - personality wise, as well as how determined they are. A player generally needs determination of at least 16 or they won't cut it.
When getting scout reports, see how the scout thinks they will fit in personality wise. If the scout says "will take a bit of adapting to fit in", then I'll generally pass on buying the player. I've bought a couple of fantastic players (Hamsik & Nuri Sahin) who just never fitted in and never played very well.
A great example was a regen CB from Argentina I bought in 2nd season. He was a very talented player - freakish defensive and physical attributes - but he immediately thought he should be in my starting XI, got pissed off, and wouldn't sign a new contract - so I shipped him off for virtually nothing. Four seasons later, he's the best centre back in the game (according to scouts) playing for Man City, with amazing attributes, although he's still a bit of a t**ser. I actually really like this aspect of the game - for the first time you can't just buy all the "best" players in the game. (Fortunately I had a 50% of next transfer fee clause when I sold him, so I got around 10million - love that transfer clause!)
One alternative is to focus your match preparation on Team Blend - I normally do this for a few weeks at the start of each season to make sure everyone is up to speed with my tactics etc.