Demos couldn't be launched

Hallo everybody,
i'm really very tired looking for the solution of downloading and launching the demos from
java web start demos page. I need a help. I have the feeling, i'm only one who can't get
the demos running. I have done all, i deinstall all jdk's and install only the latest version of
java web start but i can't run demos. I see only splash screen and javaws.exe stayes everytime
in the PC virtuall memory cache running. what is wrong? what did i do wrong. I can't understand.
I did every step which developersguide explained to.
If i don't get eny help, i'm dead!
Help.........

Do you go through an internet proxy?
If so, sometimes has an issue with detecting certain proxy configs. Do a search on this forum on 'proxy', and you'll find people's solutions...
Also, a full wipeout of web start, not just uninstalling - but manually deleting any remnants can help. Also make sure that nothing else is running when you install web start...
There are probably a few other things you can try.. your problem is quite common in this forum, so have a bit of a look at past threads and you will find lots of solutions..
Cheers,
Gavin

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