Dreamweaver not saving

I am a little new to dreamweaver I typically program webpages using notepad. So some of the features that dreamweaver adds I just don't get. However I believe I am having some bug or some setting is turned off that I don't know about.

My problem is that my pages are not saving, although (according to dreamweaver it is saving). It is not a cache problem.

After downloading the webpages (synchronizing) with the server I select one and edit it. I save the file and the asterisk in the title bar that signals that the page has changed disappears. However the file does not change on my computer. The changes cannot be viewed in the preview area, instead the old page is displayed and the mouse pointer changes to a circle with a slash. Uploading the code at the point would be pointless because the file on the harddrive has not changed, but when I do there are no changes, however the modifyed date does change. The file does not change.

Any ideas?
I think the biggest clue is that the mouse changes to a circle with a slash when I hold it over the design preview area.