Hello again. I try ;debugOn and nothing happens (the screen refreshes but that's all) Then 'help and the Kindle looks for "help" in my books (at least I've found a problem indexing a book...) Then I type ;debugOff just in case the On option worked.
I have done it in the command line too (in the terminal emulator and over ssh) with no luck.
I thought it was firmware 2.5.8 but I've read a post by someone in 2.5.7 with the same problem.
Once again, thank you for your help :-)