Err, if your mysql has changed, surely you'll need to recompile the DBD drivers to use the new mysql libraries, no?

"Google search returned no good solutions."

You have to know how to search to find what you need :) Try the first result returned.

"It is a good idea to rebuild and reinstall the DBD::mysql distribution whenever you install a new release of MySQL, particularly if you notice symptoms such as that all your DBI scripts fail after you upgrade MySQL."