odd "failure" for file exists

Ok...this is weird.  I have Xymon triggering when a file (coredump) exists
but it only turns red when a new file shows up...it should remain red until
the files are cleaned up.  After the next update cycle it goes green yet
the page shows that it sees the files.  Any thoughts on this behavior?  I
have another "file exists" test that is behaving as expected (at least I
think it is).

thanks

=G=