Edgy Difficulty (PowerPC Version)

[Irena and Richard Jenkins]

Hello there ...

I've broken one of my own rules ... and kept on updating the release candidate of Kubuntu Edgy for my powerpc.  It's an iMac ... and it was working well.  Basically I had installed it and everything worked... giving me the confidence to use it as my desktop machine. 

Now the problem is that after the last update in early October (around the 8th) I can log in correctly ... and the machine starts up.  However, after that NOTHING I type on the keyboard appears on the screen.  I cannot enter passwords, etc ...for getting my mail.  I cannot enter URL's for Konqueror, and  I am just stuck with starting programs (from the applications menu).  Please tell me this is simple to fix!!

Any ideas?

Richard
(on the backup laptop)