He Cronix, that's surely an impressive number of unique visitors. Makes me curious what kind of project it is...
And good to now that CI can deal with projects serving so many people. The question about the server config was for Peter, because he is the one experiencing the problems.
And the reason I asked about setting enable_query_strings to true is that I never changed that setting so I can use GET variables. To be sure I looked into one of our projects for a house broker where GET variables are used for pagination and filters, and the enable_query_strings setting is false. Hence my question.