Disable DTD warning for Ant scripts in Eclipse?

Question

I\'m using Eclipse Ganymede. Everything works fine, but I have an anal-retentive yearning for a warning-free Problems tab. Right now it (correctly) complains about my Ant

Answer 1

In fact, as damoco says, this seems to be a bug in Eclipse. If I delete (copy elsewhere) the file from windows, refresh eclipse, and then restore the file, and refresh again, the warning goes away.

I'm using Eclipse Galileo build 20090621-0832.