google disappared from searchbar, bookmarks toolbar keeps reappearing

I've been using FF portable for many months. After the latest automatic update (1.5.0.7) I noticed that all the search engines are gone from the search toolbar. Therefore when I type a string and press "return" nothing happens. I followed the link to "add engines", but the mozilla page at that link does not offer google anywhere on it, only a bunch of other search engines. Not having the quick google search will really cripple the appeal of using firefox for me. Can anyone help?

Also, when opening multiple instances of the firefox window, the bookmarks toolbar keeps reappearing even though I deselect it. Can I force firefox to always ignore this toolbar? I don't use it.

thanks for any suggestions
squeezebox