On the heels of McTaggart's new post, with the earlier news of taking Brad James off the 40-man, I'm going to agree with OremLK and go ahead and guess that the Astros will be active in the 2009 Rule V draft in a couple of weeks.
There are four spots available on the 40-man roster, and the Astros have not added Drew Locke, Koby Clemens, or Jon Gaston to the roster - guessing, hopefully correctly, that they wouldn't stick on a 25-man club for all of 2010.
That said, Fox Sports' Jon Paul Morosi is saying that Daniel Cabrera's live arm, nosebleed ERA, is looking for a 40-man roster spot. Whaddaya think?
Update: Everyone is correct, Gaston is not eligible for Rule V selection. I got carried away. It won't happen again. Until it does.