google calendar plasma widget shares cookies with konqueror

Binary package hint: plasma-widget-googlecalendar

I use one google account (account A) for surfing the web (hereamong search with google) which I do using konqueror. But I use a different google account (account B) for calendar, which I usually view using firefox.
When I configured the google calendar plasma widget I configured it to use account B, then I discovered that, next time I used konqueror (on google search) it was logged in as account B, even though I last time I used konqeror I was logged in as account A. Further when I in Konqueror logged out account B, and logged in on account B, then the google calendar plasma widget could no longer see my events.

ProblemType: Bug
Architecture: amd64
Date: Tue Nov 24 21:53:54 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: wl fglrx
Package: plasma-widget-googlecalendar 1.2-0ubuntu2
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=da_DK.UTF-8
 SHELL=/usr/bin/tcsh
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: plasma-widget-googlecalendar
Uname: Linux 2.6.31-14-generic x86_64
XsessionErrors: (polkit-gnome-authentication-agent-1:2997): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed