It's a common occurrance when you're searching through too many posts at once. If you have an idea as to which category your search would best fall under, or even which specific forum, you might have a better chance at the search completing. When you make it search all forums, it often takes longer than 30 seconds, and the server forces the script to stop. The only way to truly get around the 30 second timeout is to get a server admin to turn off the 30 second timeout in the PHP configuration, and we all know that won't happen.
I tried lowering the criteria. My search was for high cpu* temp. I tried first searching the General Forums, same error. i then individually tried searching the Support, CPUS and Cases, Cooling and Overclocking forums, still the same error. I haven't as yet been able to get a result for that search.
My temperature problem is resolved (thank you fury and justintime :headbang: ) but it would be nice to know the search will be there in future when i need it.