illustrator CS pencil tool keeps starting new line

[markJ]

I wish I could record this thing, but dont have camtasia,
i just want to be able to keep drawing from the end of the previous line and keep adding with the pencil tool, so one very long swirly line, just keep drawing squirls and swirls, but at some point it starts a new line, I have edit selected paths ticked, aswell as keep selected ticked, these from the options when you hit enter after drawing with the pencil tool, enter brings up the dialogue box with options...
below is a sample with the brush tool, the 2nd picture shows an extension from the end of the first line, then the 3rd picture shows a continuation from the end of the 2nd line but the previous lines all disappear

if you untick "edit selected paths" in the pencil options dialogue box you cannot continue from the end of the previous path so it has to be ticked..probably just a limitation I have to deal with for now in CS, may be updated now were at CS4.