At versiontracker I noticed some people complaining about dock crashes with the disable utility. Someone posted the following reply:
No need for an application for something that can be done easily from the command line:
To turn Dashboard off:
# defaults write com.apple.dashboard mcx-disabled -boolean YES
To turn Dashboard on:
# defaults write com.apple.dashboard mcx-disabled -boolean NO
You have to restart the Dock after making either change for it to take effect:
# killall Dock