[Jack_]

The Race Row was the start of the decline. Well, actually, as MrGaryy said it was BB8 - but it was because of CBB5 that that series was dire.

There have been a number of contributing factors to the decline alongside the awful production though, including:

- So-called clueless 'fans' evicting entertaining housemates early and picking Godawful winners
- The show becoming too politically correct [again, as a result of the Race Row]
- As a result of that, the show gaining a whole new target audience - children, which is very evident in BB11. Jedward? Really?

But yeah, it was mainly the production of the show post-CBB5 that killed the show and secured the axe.