The following applet:
  http://atlas.lsu.edu/doqq2004/
is rendered incorrectly in mustang (latest I tried was b58).
See attached screenshots. The problem is reproducible on
solaris and windows.
Works fine with 5.0u5.

See this thread for more info:
  http://forums.java.net/jive/thread.jspa?threadID=1654&tstart=0