I don't know, but a long time ago when I started a Steam game it said I had outdated graphics, so I download CCC. A few minutes later I start Blockland and everything is dead.
CCC is distributed along with the video drivers. It's much more likely that the updated video drivers are causing the problem, rather than the CCC itself.
For the sake of narrowing the list of probable causes of these issues and to help ensure that the issues are consistently resolved, everyone should make sure they're using the latest driver package from ATI.