re: "Bright Chunks At Phoenix Lander's Mars Site Must Have Been Ice."
Sorry to burst your bubble, but CO2 ice could also do that as in behave that way (even CO2-H2O-Clathrates). Maybe Nick could shed some light on this.
Here's something from the NASA site (great, we brought our own water-ice... just kiddying).
My peeve is that it's still taking too long. :}