There's an annoying thing that currently happens with the Java code on my wiki: selecting code to copy doesn't work in Firefox (try it). Any easy workaround is to use IE. However, I found a solution yesterday after communicating with the author of the Java2HtmlPlugin for JSPWiki. His solution was to upgrade to the latest version (4.1) of the library. I did the upgrade yesterday morning, tweaked a couple of stylesheets and called it good. The copying was working and everything seemed to be fixed.
In the last 24 hours, this site has crashed around 8 times - seemingly every two hours. This is strange b/c it's been up a week at a time prior to that, as well as the fact that my ISP has scripts to restart Tomcat if it's not responsive. The only thing I changed was the java2html.jar, so I'm guessing that was the problem. I backed out the change this morning - and copying with Firefox is going to suck once again. Hopefully that change fixes the stability of this site.
Update: This site crashed 3 times today even after I backed out yesterday's change. It must be something else. It's wierd that it's crashing now after having several weeks of excellent stability.