I see that you're using the HTML analyzer. Unfortunately that does not play very well with highlighting at the moment. You may get garbled output.
Is it the HTML analyzer or the fact that it's HTML content? If it's just the analyzer you could always just copy the HTML content to another field with a different analyzer and use that for highlighting (but search on the original field). Would this work, and if so, which analyzer would be suitable for the second field?
Adrian Sutton http://www.symphonious.net
