I have a codeigniter project that I have run successfully on Mac OS X Lion. When attempting to run the same project in ubuntu, requesting localhost/project results in a blank pa
Did you by any chance put any white space or new lines after ending PHP tag in some of your files? If so - delete them along with closing PHP tag.
(P.S. In code igniter you should never close PHP tags in files which contain only PHP code - Controller, Model,...)