Today I went through the instructions given in the Ubuntu forums for the Iconia problem, and I think I am close.
For starters there are a couple differences in the procedure for F15 because the mtpfs package is not available in the repositories, so dependencies must be chased one by one for it to install from source.
Also the fuse group did not exist and I had to create it according to a sample "group" file I found in an Ubuntu machine. I am wondering if there are some modifications to do at this point for the procedure to work.
Additionally I had to take the "old school" approach of mounting the device manually as instructed in the README of mtpfs, because the suggestion of putting the mount point in /media/a500 proved problematic and fruitless. So after some effort I finally got the machine to recognize the device (df notices it):
[root@tizoc a500]# df -h .
S.ficheros Tamaño Usado Disp Uso% Montado en
mtpfs 13G 11G 2.1G 84% /mnt/a500
I was only able to enter the directory as root, and even though I manage to see the available space, the only item in the directory (after a ls that took too much time to complete) was a lousy directory called "Playlist" which was empty. With the purpose of doing more research online I unmounted the device and called it a day, but I will continue tomorrow because I have the feeling that I am nearly there.
Here is a question, where are the udev rules collected or processed? I ask that because I also suspect the step involving the udev rule has something to do here.