Hi,
as far as I know session restore works only with KDE applications, not with 3rd party applications. I seem to remember that there was an option to choose wheather the session restore would also restore other than KDE applications in some distros (Redhat 6.2 or Suse 8.0), but I do remember that it didn't work for me.
Is this a prob with kde or the 3rd party apps? is itg too optimisic to find the desktop "exactly as you left it" (from kde manual )
Well, one might say it is a problem with 3rd party applications, on the other hand you might also blame KDE. I choose to blame 3rd party applications.