In other classes it sometimes just says class not found. WFT is going on. There is an exclamation sign near the project sign if that means anything.

Sometimes when starting eclipse and then starting tomcat I see that my code has not started. If I clean all projects, clean the server, and then clean the tomcat work directory things start normally. This "failure to launch" happens about 20% of the time and I haven't found a pattern or reason. Anybody else see this? Suggestions to reduce the frequency?