Multisite and domain mapping issues

I’m not sure if this is the best thread for this topic as my issues is a little odd.

I’ve got two websites: rambleicious.ca and reneemctavish.ca. The rambleicious site is an older one, and I recently started reneemctavish.ca. My web hosting guy has made these a multisite set up so I can see both in the same dashboard.

I have two logins: the rambleicious one, and more recently a new login for reneemctavish.

I’m also using the Evolution theme by Elegant Designs, if that helps.

The issues I’m having now are these:

-I can’t see my “published immediately” posts until an hour, sometimes two hours, after I’ve posted them.
-Comments on posts for both sites and on my stories on the reneemctavish site don’t work at all (and the form has been removed).
-When I’m logged in, I can’t see the dashboard when I preview the site (but I can see it when I preview pages – sometimes).
-Everything works OK so long as the domains are not mapped.
-Even though my user names are super admins, other users (the site designer and web host guy) don’t have the issues I’m having when they are logged into the sites (usually, anyway – sometimes they do).

So, is this a domain mapping problem? Is it my user profiles? Do I need to nuke this from orbit and start over?

I’m not terribly technical about the back end stuff, but I’m really very puzzled about this as is the webdesigner who can’t get it all working when it’s mapped.

I would be very grateful for the help of the community on this.

Thank you!