1)We use Poll2 - there is no Poll1.
2) We use Forums, not Forums2
3) We use Lists, not MailingLists or MailingLists3


1) Are they experiment version that don't work? They look identical so far.
2) Are they the development version and the final one is the unnumbered 
one? (excpet poll2)

3) Are they supporting projects that should not be included but are used 
somehow?

4) Something else?

Should any be deleted from the Solution?

Why are they there?