Windows 7 x64 Home Premium, ATI Mobility Radeon HD 5470
Short description of error
In 2.69 when holding the ctrl key if you click on two edges all the ones in between would snap to center. In 2.7 only edges that are explicitly selected will snap to center meaning that you have to click each edge rather than being able to select a range of edges.
Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps