Samsung USB menu stuck !

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Jul 13, 2010
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Hi I'm trying to connect a usb drive to my samsung tv,
Then all of a sudden, after this initial message,
[[new device connected, [photos,videos etc...]]

then nothing happens! I tried pressing up and down arrow but of no use.
The screen is kind of stuck only on usb drive but i can access other hdtv connections..!Its not like whole screen is frozen..

Tried with another 3-4 usb drives & and Hard disk ,all same result.

It was working ok before....

My tv is samsung H4900 plasma.

strange..
any help ?