Opening new session from Fluxbox...
 

In KDE there is an option in the menu to "start new session", I would like to know how to do this from Flux. It would be nice so that I could do some things in root and then go back to my regular account. Thanks.

ctrl+alt+F2
log in
startx -- :2

to get back to your original desktop, type
ctrl+alt+F7

:study: http://www.tuxfiles.org/linuxhelp/multiple-x.html

Cool! Thanks for the reply and the link!

If you are using KDM, then the following magical command will do the same as "Start New Session" from KDE:

echo -e "reserve" > ${XDM_MANAGED%%,*}

This works for me when executed from IceWM.

I got this from going through the KDE source code, since Google couldn't help me on this one. I know this is answer is a little late, but I want to have this solution out so that the numerous others that have asked this question can get an answer via a search engine.