SQL developer UI disappearing off the desktop

Hi....
Anyone run into this? I'm running 32 bit XP. When I have really lengthy queries or updates that I execute via sql developer, the UI will sometimes disappear from my desktop, task bar, etc. etc. If I run Task Manager sqldev is still running as a process, but isn't visible in the 'Applications' tab. Everything seems to be ok once the long op completes.....it returns to a visible state and behaves normally.
Is this expected behavior?
Thanks in advance,
Bob

Drawing issues are typically due to other soft and drivers. At least make sure you have the latest drivers for your video card.
The latest JDK may also have improvements.
Generally, disabling Direct Draw in the \sqldeveloper\bin\sqldeveloper.conf avoids all there issues:
AddVMOption -Dsun.java2d.noddraw=trueHope that helps,
K.

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