klauncher complains about io-slave

[Petr Simon <sim@klubko.net>]

Hi,
I changed my email address for my debian mailing lists, cause lists 
stoped to come on my old address. Why? I don'y know. Does anyone?
Anyway I have quite serious trouble. I did some installing and now I am 
get this when I run Konqueror (Home)

Could not start process Unable to create io-slave:
klauncher said: Error loading 'kio_file'.

and of course I see no directories.
When I try to mount from deskrop icon I get this:

Unable to create io-slave:
klauncher said: Error loading 'kio_file'.

And I can't delete, copy or move neither in Krusader.
What does it mean and what can I do about it
Thanks
Petr