Comment 2 for bug 313439

Thank you for your suggestion. However, the changes you are requesting aren't really a bug and require more discussion, which should be done on an appropriate mailing list or forum. http://www.ubuntu.com/support/community/mailinglists might be a good start for determining which mailing list to use.

There are a couple additional comments I would like add:
* The program isn't technically executing as the result of a +x flag or anything like that, nautilus is actually calling a helper application and running it that way.
* naitilus can be set to open the file rather then run it if you go into the configuration, I believe the out of the box behaviour that they want is to have the file run.
* Java is generally pretty safe (although I am sure someone will post something to prove otherwise). Even if a malicious file was run the hopes are that the user isn't running the file as root (he/she would have to enter a password regardless) so the whole system would be affected...

I am wishlisting this issue as it is a valid one and I can see the reasoning from both sides.