I have been experiencing Nextstart crashes :when I go to access the nextstart menu but move away from it and do nor choose anything. nextstart disappears, ie the bottom bar (incl taskicons etc. This forces me to show the desktop and restart the program from the C drive Program lists.

Am I doing something incorrectly and is this correct program behavior?

if it was workshelf i'd say you were trying to do too many things at one time, but since it's nextstart i would suspect another program causing nextstart to crash. i would start with disabling the programs that sit in the nextstart systray one by one to see if the problem goes away.