I have realy made a dummy thing... I have made chmod -x * in my home folder.... so every file lost it exec permission, of course this cause me some other problems, like folder with no acess and losting some script execs... so to fix it I reverted making chmod +x * ... okay, now I have a bouch of file with exec permission, I tryed fixing making a chmod -x *.jpg and *.mp3 and */*/*.mp3 and so on, but I know this isnt the right thing to do... is there any way to make the files back to its default perm like making folder exec and images , videos, songs, txt and docs files dont?

I had a similar problem to this, and wrote a recursive script to fix it. It's not 100% fool-proof, but will in essence chmod -x everything except your folders.

You can find a rather poorly documented detail here: http://www.kaear.co.uk/default.asp?pageID=33

(Under "Massively recursive chmod command")

As an aside, the chmod string must in the numerical form, and I would suggest picking something like the following:

644 = rw-r--r--
640 = rw-r-----
600 = rw-------

Give me a bell if you need any help!

thanks, this helped me

regards