Leaving a gpu block hanging free

Going to install my new 8800GT tonite, but it won't be hooked up to the loop until wednesday or so; have to test and stress it first. So my block will be laying against the bottom of the case, still attached with now heat on it. This will be no strain on the tubes, but could it be bad for the block in some way I don't know about?

Nope, I leave mine hanging all the time when swapping out cards. No problem with leaving it hanging for a couple days.

It should be fine.

Wow, quick response. Thanks guys.