Output compression and Image caching + output

[eluser]Timz[/eluser]
Hey Developers,
I just implemented output compression, Yslow advised me :-)
I removed all my direct echo's and print's. Everything works fine except my images don't render fully in the browser. When i disable the compression they render correctly. I show my images via a thumbnail class (+caching), it's called thumbnail.inc.php by Ian Selby ([email protected]).

What could this be ?

[eluser]whitey5759[/eluser]
Did you use mod_deflate or mod_gzip to provide compression? If so, what exactly did you put in your .htaccess file to accomplish this?

[eluser]Timz[/eluser]
I just set the $config['compress_output'] = TRUE; Config file says it's gzip compression.