If I try to find an email in Mail by searching by someone's name or the business name that I know is in the email address it comes up with nothing. I have tried it with all of the different search options. For instance, I was trying to find an email from someone named Katherine. I start typing her name in the search field, and Mail immediately makes a list of people whose names have the same letters. If I select her name, it shows up with zero messages, but I know I have mesages from her in there. Then I tried not selcting her name from the list Mail provided and just typing it in and hitting enter and it still doesn't show up. I am assuming this is a bug. But if someone can tell me something I can change to make it work that would be great. Thanks!
I fixed it by reindexing via spotlight. I followed the indexing instructions at this link: http://support.apple.com/kb/ht2409
And the only folder I dragged in was the Mail folder from my Home directory. (Home Directory/Library/Mail).
Thank you so much for your help Miska_FL! Hopefully that will help someone else having a similar problem.
Thank you for the indexing tip NHC2365! That put me on the right track. Jaydisk, maybe you can try the same thing I did...