I updated to Joomla 2.5.6 and have errors on all list page, profile pages and group pages. I also updated free version of Falang to version without links.
"No information available" is now written dozens of times.
Joomla 2.5.6 requires the new CB 1.8.1. Please see our frontpage.
However CB has no string "No information available", and this is not a CB 1.8 vs Joomla 2.5.6 known issue.
So maybe you have another extension incompatible with Joomla 2.5.5/2.5.6: Please check with all your extension providers for compatibility information.