Craig wrote:
Albert Blauensteiner wrote:

Why not reboost Hubble anyway if propellant permitting?

Good idea...
http://www.nasa.gov/pdf/331922main_s...kit_050609.pdf
....After the work on Hubble is completed, Altman and Johnson will
oversee Atlantis’ reboost of the telescope to a higher altitude,
ensuring it will survive the tug of Earth’s gravity for the remainder of
its operational lifetime. A final decision on how much altitude will be
gained by the reboost will be dependent on Atlantis’ available
propellant.

No such re-boost of Hubble occurred on STS-125.