>This does bring up a question, however. How can a LOCATE without an expression be optimizable? If there's no expression to optimize...

from what little i know of optimization, i thought that some kind of index is cached. The reason NOOPTIMIZE has always been available is because some operations could cause the cache to become obsolete. My guess is that Locate is using this cache (even without an expression) while GO doesn't benefit from it.

Does this sound right? I admit rushmore optimization is beyond my comprehension, and it's only by luck that i've had any success with it.