Greyed out history and abnormal mouse menu

[Picilli]

Please, someone point to a web page which explains how to fix greyed
out "recently closed tabs" and "recently closed windows", or tell
how to fix this if you happen to know how.

There were several tabs and windows open and closed, yet none is
showed under History in menu bar. Here is a screenshot:
http://img97.imageshack.us/img97/184/greyhistory.jpg

I deleted my ~/.gnuzilla folder trying to diagnoze or fix it, a
clean start-up without old preferences, without even old bookmarks,
but it didn't help. I didn't mess with config.

There are no add-ons. I have no ~/.mozilla folder. I do not browse
web in private mode, and I have checked options to remember all
history (under preferences, Use custom history settings).

Also, a mouse menu looks truly abnormal when for example use a right
mouse button to view an image or its properties.
When choosing "View image" from the mouse menu, the image is not
displayed; it just doesn't work.
Here is a screenshot of the crazy mouse menu over the Icecat image
in gnuzilla web page:
http://img97.imageshack.us/img97/9018/mousemenu.jpg

Besides the menu being abnormal with tons of unrelated options, note
at the bottom of the menu there seems to be a missing field, between
"Check Spelling" and "Select all"

There are no such problems in a Firefox, and there weere no such
problems in Icecat 3.5.7 or any previous icecat version.

Thank you.