Re: gone - no logout

Suse 9.1 Pro is installed in my server, when using command "last" I see:

[...] user pts/1060 machine date-time gone - no logout [...]

Sometimes there is logout time nicely displayed. This gone problem appared just now, although I saw it few times before... Any ideas? Anything bad happened?

who/finger shows that all these users with "gone..." are nicely logged in. w shows they aren't.