Dashboard is missing on some of my sites

In the past couple of days, something has changed in my dashboard settings for some of my wordpress installs, but not all of them.

The dashboard on the left hand side of the screen has disappeared and I can’t find in the docs where to activate it, so it comes back again.

I have added the blogs to a program called AutoBlogSamurai, but I have been using this for a year now and this has only happened in the past couple of days. The program is still working properly, posting to my blogs, but when I went in to add a couple of new catagories, I noticed the change.

CAn someone tell me where the setting is to put the dashboard back on the left hand side, it is a real pain to use it without the dashboard.