Pasting text copied from a Java text input field hangs X11 application

In the HotJava build that currently lives in the 1.0.2 workspace, if I
select some text in the URL input field and then hit copy and go to some
other OpenWindows application (such as command tool or mailtool) and
hit paste, the other application is hung for about 15-30 seconds and
the selection is never pasted.