Note:
phpMyAdmin 2.6.4-pl4 requires a minimum version of 2.1 for custom themes
Improvements:
* Foreign-key dropdowns can be more customized
* Export: configurable filename templates
* Display column comments while editing data
* Transformations: new hexadecimal mode
* HTTP auth: support FastCGI
* Themes: can now have different theme per server
* OLD_PASSWORD in the list of functions
* Better messages when checking numerical input
* Allow adding DROP TABLE when copying databases
* Better support of information_schema
* Various interface CSS improvements
* Tree subgroups in left panel database selector
* Documentation: links and anchors to every FAQ item
* Table comments move to page header
* Export: configurable default charset
* Removed warning about PmaAbsoluteUri not set
Fixes:
* Database search in MySQL 5.0.x on fields without a charset
* Invalid "normal" cursor style
* Browsing state when deleting multiple rows
* Support bigger queries in print view, insert row, export results
* Unsaved changes to relations were lost when changing display field
* Exporting under IE 6 (Windows XP SP2)
* Better catching of parse errors in config file
* XSS on the cookie-based login panel
* Show all while browsing foreign values
* Escaping of special characters in ENUM or SET
* XSS on table creation page
* Using mysqli extension with MySQL 4.0.x
* "empty result set" message was sometimes not returned
* Incorrect message "You should define a primary key"
* Abide cfg['Lang'] settings even if using MySQL > 4.1.x
* XSS on username (cookie-based login)
* (pl1) Exporting in https under Internet Explorer
* (pl1) Missing Save button in Relation View
* (pl2) Security fix: local file inclusion
* (pl3) Security fixes: local file inclusion and XSS
* (pl3) PHP 5.1.0-dev compatibility
* (pl4) Security fixes: HTTP response splitting problem