hey i checked the http://www.kriesi.at/demos/display/ theme and i get 1 error saying
DOCTYPE Override in effect! The detected DOCTYPE Declaration "<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">" has been suppressed and the DOCTYPE for "XHTML 1.0 Strict" inserted instead, but even if no errors are shown below the document will not be Valid until you update it to reflect this new DOCTYPE.
The document located at <http://www.kriesi.at/demos/display/> was tentatively checked as XHTML 1.0 Strict. This means that with the use of some fallback or override mechanism, we successfully performed a formal validation of it. In other words, the document would validate as XHTML 1.0 Strict if you changed the markup to match the changes we have performed automatically, but it will not be valid until you make these changes.
can you change something to avoid this error?