In Views table, want one (only) date, but getting "samedate to samedate"

Got a puzzle here... might be something obvious as I'm not very familiar with Date or Views.

Short version:

I've made a Content Type for events, which includes a created field of Date type, field_gigdate - just one, not a "from" and "to".

Then I've made a View to generate a table, of all published events from now onwards, in order of gigdate.

In the resulting table, I'm including the date. I was expecting it to appear as e.g. "Saturday, 15 October, 2011". But instead, I've got "Saturday, 15 October, 2011 to Saturday, 15 October, 2011". Also the date column has a grey background whereas the other column is white as I expected - don't know if that's connected.

Been poking around all over the place to see if I can find a setting I've got wrong, but no luck so far!

Details:

PHP Version 5.3.2-1ubuntu4.9.

Relevant modules enabled:
Date, Date API and Date Views, 7.x-2.x-dev (updated today).
Views and Views UI, 7.x-3.0-rc1.
Embed Views Display, 7.x-1.0.

I realise there are some more things I could be doing:
a) upgrade Views & CTools to .dev versions
b) export my View & post it here

But would like to be reassured first that I'm not missing something much more obvious. Views 7.x-3.x-dev does warn "Use at your own risk" :-)

This may be the same issue as http://drupal.org/node/1299640 , though that one's tagged as a bug whereas I'm not really sure of that yet.

I've also seen http://drupal.org/node/1197352 & specifically comment #2. Made sure to update to most recent Date .dev in case that fixed it, but it didn't.

Thanks in advance for any clues or questions...