Thanks Ruben,
I've found the site permissions, and I already had a "1" in the "Vote in Poll" box for that forum. There is a "sister forum" for which all the members of the one in question have access also. I didn't have anything in the Vote in Poll box for that "sister forum" so I have put a "1" in there in case it matters. It probably doesn't, though.
A member who couldn't vote on a PC with Win7 & 64bit IE9 has now tried with Google Chrome on the same PC and has been able to vote. So it must be user related and not an issue with the board.
EDIT - the user set IE to accept all cookies with everything set as "default". No success...
Last edited by MuddyD; 03/24/2013 11:35 AM.
