Are there any exceptions or errors in the activity log?
Are you running an old plugin that is no longer supported?
I've seen this when people are running the docker plugin which is no longer supported.

On Fri, Sep 2, 2011 at 8:03 AM, Eric Ladner <eric.ladner@gmail.com> wrote:
On a windows machine (never seen this on Linux at all), after running
JE for a long time, when you bring the window back from the task bar,
it displays the window border, but the internals aren't getting
refreshed (typically shows through what was behind the window when you
brought it back, and if you move it, that image goes with the window).

JE is alive at this point, and clicking the "Big X" gives you the
"save/discard" dialog, which looks normal and works like you'd expect.
 So I know JE alive under there, it just won't refresh the display.

Typically these are JRE problems and JE is running under JRE 1.6.0_22.

Has anybody seen this before?

--
Eric Ladner

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