I'm a big believer in git, so big that all of my new projects use it (and I'm very slowly converting my old projects) but it does have it's downsides. My biggest beef is how hard it is for less experienced programmers to use it because of the command line usage and how hard it can be to understand branches, rebasing, and merging (I know it shouldn't be that difficult). GitHub for Windows and GitHub for Mac is helping with this but the default way to learn git is still the command line.

This article has a couple complaints that I've heard before (the number of commands and access control) but it also has a couple that I haven't heard but might not every be a problem for you (large repos, and large contributors on a single branch).

http://www.peterlundgren.com/blog/on-gits-shortcomings/

Via reddit.com