Convert text into a png image using GD without using 
WikiPluginCached.
The images are stored in a private <PHPWIKI_DIR>/images/<LANG> subdirectory instead,
which are not timestamp checked at all. Delete the .png file(s) if you change anything.
This is a really simple and stupid plugin, which might need some work.
Usage
<?plugin text2png text="some text" ?>
Arguments
- text
 - some text to display
 - lang
 - language subdirectory
 - _force
 - set to 1 to recreate the image
 - fontsize
 - 18. with GD1 it's the pixelsize, with GD2 the pointsize
 - with_shadow
 - 1
 - fontcolor
 - 000000
 
- shadowcolor
 - AFAFAF
 
- backcolor
 - ffffff
 
Configurable Options
See the sourcecode. You'd probably need to adjust $ttfont and text2png_debug.
Example
<?plugin text2png text='Hello WikiWorld!' ?>
would produce:

See Also
Help:TeX2PngPlugin, 
Help:TexToPngPlugin