I am quite content with our CBs, except for losing a big man like Senderos, who would be perfect in games against likes of Boston, Stoke, etc...
I think we should be getting used to concede more goals, because we are so much more attacking minded that even 2 seasons ago. Not that I'm happy about it, but that's the way it it - also, Premier League as a whole was a very attacking league last season, it's kind of naive to expect us be on the same level comparing to previous seasons, when there is plenty of games which didn't in goalless draw, like it would happened season or two ago.