NOTE: Experienced this problem with Google Chrome 5.0.342.9 beta on Ubuntu 9.10 Answer:
First make a backup of all you personal settings eg. Bookmarks
Close Google Chrome (Press the key combination Ctrl+e in order to close Chrome)
Open a new Terminal Window and type in the following command
rm -rf ~/.config/google-chrome
or
rm -rf /home/YOURNAME/.config/google-chrome
Start Google Chrome and you’ll notice that Chrome has been reset and problem may be fixed.