Hi,
The gsoc branch of Martynas Mickevičius with the charts implementation has just been merged into master.
I've made a few security enhancements to prevent xss, and changed a text to a tooltip. And during the merge I renumbered his faq item from 6.28.to 6.29.
So we now have charts in the status page, the profiling fieldset and for query results.
Implementation details: http://wiki.phpmyadmin.net/pma/Devel:Charts