Search function has been acting up for awhile as many have noted.
It's not something easily fixed, which is why we haven't done it.
If you search and get a white page, try hitting refresh. That fixes it for me and I just tried it several times.
We will investigate why it is timing out (thus making white pages) and why refreshing then fixes it.
Thanks for your understanding in this matter.
If I can find a google plugin I will just junk our search thing altogether and use a google site search.