When using Coppermine with Opera (http://www.opera.com), i'm facing some issue with browser caching: Opera uses meta information in order to know if it may cache pages. Because coppermine pages contain no about chaing, Opera chaches the pages by default... leading to a few troubles!
Can you add the following in the html header of each page:
<meta http-equiv="Pragma" content="no-cache"/>
Thanks for your work!
I already addressed that issue on the old board but since it felt offline, I presume developers didn't see it...
http://coppermine.sourceforge.net/oldboard/viewtopic.php?t=3000