Full Idea
It seems possible that if a powerful multi-tasking computer was then given consciousness, this might restrict its operations instead of enhancing them.
Gist of Idea
A very powerful computer might have its operations restricted by the addition of consciousness
Source
Tom Clark (talk [2003]), quoted by PG - Db (ideas)
A Reaction
A nice thought, because it challenges the usual view - that consciousness brings huge intellectual liberty to a mind, and that a mind without it is necessarily restricted. Maybe consciousness is a bottleneck.