http://forum.coppermine-gallery.net/index.php?topic=5841.0 - you only can change this in php.ini if the webserver is yours to administer (probably not, as you appear to be webhosted). To trouble-shoot the upload process, enable debug_mode in coppermine's config for everyone (with notices turned off), and set method for file uploads to "Single file uploads only" in the groups manager for all relevant groups. This should give you a more detailed error message. You (as gallery admin) should upload using ftp-upload and batch-add anyway - this should fix time-out issues that are related to http uploads.