I warned people that the whole site search was slow (look how many topics and forums there are - duh)

That is why for the longest time I had it turned of, but people complained that you could not do a full site search so I turned it back on.

If you want a faster search I suggest just searching in the forum that the topic should be in.

As for the searching for topics from a particular person. You can do that by clicking on their profile and there is a feature that lets you look at all the posts they made.

Can't make all the people happy all the time...