I've been looking for more information, as I was previously, to solve this problem.
As I said, the extrange thing is that all worked well before I installed Guake, blueman and begun to change things, the more important, I think was to press the f12 to disable wireless connection because I was using wired easily.
I am using: dual windows 8 - Ubuntu 12.10, Compaq CQ58-252SS notebook, ralink 3290 for wireless, etc ; the ralink 3290 seems to cause many problems because of the kernels in Ubuntu 12.10, and it controls both wireless and bluetooth.
The problem was : f12 ( or any combination with alt, ctrl, fn ) stopped to work, later it worked only for bluetooth, when booting the system brigths cyan, but in the exact moment that Ubuntu starts it goes red and gets so fixed afterwards, the wireless didn't appear at all in the nm-applet and in any other place as if there was no conection by hardware. But I remember at the beginning all went right and I used it with Ubuntu 12.10 as in windows 8.
Now I've found and followed this post :
I didn't ask there, only here, but I've been trying to solve this at least to be able to use wireless conection.
I think that the use of higher kernel is dangerous, but now it works the nm-applet, showing and connecting as before, not so the f12, neither the red light that remains always so, and I hope no problem with the system to appear, by now all goes well.
I've also been reading other (a lot ) post about this driver Ralink 3290, and it seems that is so far a real problem with Ubuntu 12.10.
Another coincidental issue is that some Temudjin has been my solution, I hope stable in time, being I related with Mongolia.
So I hope this will be officially solved in next times, and maybe can serve to somebody. In this last case I remember, not being at all anexpert, but I think that it is dangerous to install kernels in this way (3.7.2 in my case, simply following the link offered in the post given and rebooting after installing the kernerls 64b and later the 64b extras).
Thanks for your responses sincerily.