I thought it was time for some upgrading and optimization. The big difference here is Nginx, you should notice that the pages load much faster now since most of the data is cached.
Added since before:
* Cache system using XCache v1.3.2
* Compressing pages with mod_deflate
What I've done so far:
* Upgraded to PHP 5.3.10 (latest)
* Upgraded GD-library (latest)
* Apache with reverse proxy Nginx (Major speed increase)
* Sphinx Search (Major speed increase)
Planning to do:
* Activate CSS Sprites
* CSS files stored as files - done!
* Compressing Javascript
* Compressing CSS
So we're still using Apache as normally but all static pages are served through Nginx.
http://wiki.nginx.org/Main
Added since before:
* Cache system using XCache v1.3.2
* Compressing pages with mod_deflate
What I've done so far:
* Upgraded to PHP 5.3.10 (latest)
* Upgraded GD-library (latest)
* Apache with reverse proxy Nginx (Major speed increase)
* Sphinx Search (Major speed increase)
Planning to do:
* Activate CSS Sprites
* CSS files stored as files - done!
* Compressing Javascript
* Compressing CSS
So we're still using Apache as normally but all static pages are served through Nginx.
ginx is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Igor Sysoev started development of Nginx in 2002, with the first public release in 2004. Nginx now hosts nearly 12.18% (22.2M) of active sites across all domains. Nginx is known for its high performance, stability, rich feature set, simple configuration, and low resource consumption.
Nginx is one of a handful of servers written to address the C10K problem. Unlike traditional servers, Nginx doesn't rely on threads to handle requests. Instead it uses a much more scalable event-driven (asynchronous) architecture. This architecture uses small, but more importantly, predictable amounts of memory under load.
Even if you don't expect to handle thousands of simultaneous requests, you can still benefit from Nginx's high-performance and small memory footprint. Nginx scales in all directions: from the smallest VPS all the way up to clusters of servers.
Nginx powers several high-visibility sites, such as WordPress, Hulu, Github, Ohloh, SourceForge, WhitePages and TorrentReactor.
Nginx is one of a handful of servers written to address the C10K problem. Unlike traditional servers, Nginx doesn't rely on threads to handle requests. Instead it uses a much more scalable event-driven (asynchronous) architecture. This architecture uses small, but more importantly, predictable amounts of memory under load.
Even if you don't expect to handle thousands of simultaneous requests, you can still benefit from Nginx's high-performance and small memory footprint. Nginx scales in all directions: from the smallest VPS all the way up to clusters of servers.
Nginx powers several high-visibility sites, such as WordPress, Hulu, Github, Ohloh, SourceForge, WhitePages and TorrentReactor.
http://wiki.nginx.org/Main
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Yeah I've been looking at the slow query log but there are no slow queries. 
