[Solved]Change in php class file not taken

Hi,
first of all, thx a lot for such a tool, it's absolutly awesome

Here is my question :

I've done modifications in some modules/core/classes/*.class files ...
Bue when i reloaded pages, nothing happend ...
Three days after i come back to the gallery, and changes have been applied ...

Can someone tell me how to del some cache or something where .claas are "saved" ???

I tried to del all cahce through /lib/support, but nothing has changed ...

Thx in advance for your help

Tuxproject