I thought my "TimO's being talked about surreptitiously" alarm was going off.
I disclaim having anything whatsoever to do with UARS, or wherever it crashed in the end. ... or even know what you're talking about, or who you are.
ROSAT is due to re-enter shortly, and whilst the satellite is significantly lighter than UARS (only about 2½ tonnes vs 6 tonnes for UARS), it's likely that heavier bits will get to ground level than would have with UARS. X-Ray and Gamma ray telescopes (which are generally in satellites) tend to have big heavy lumps of material because they using grazing incidence mirrors to reflect the incoming high energy wavelengths onto the detectors, and these have to made out of lumps of heavy, dense stuff (technical term) which doesn't fall apart easily when they re-enter.
Watch this space (or some other Space).