We have successfully ported our high traffic web site (ThaiLE.com) from apache2+mod_php to lsws+php-lsapi. This site has been serving about 3.5 million page view per day plus 3+ more million banner serving through lighttpd. In essense, it's a banner exchange web site with 3M+ requests per day, with about 3M+ banner served (through lighty) and about 15 million MySQL queries. All on one Dell server, P4D 3G, 2G RAM, 70G SCSI 15000rpm and Gentoo OS with NPTL. More detail can be found on my personal blog here, http://pizzahosting.blogspot.com/2006/05/scaling-experience-of-thailecom.html. You may ask why I need to split the traffic between lsws and lighty, that's just simply because we have reached concurrent limit on incoming traffic. Had that not been the problem, I would say this box may be able to deliver close to 4.5M banner exchange requests a day before it max out. In summary, lsws really really work!