I'm getting a sense that all is not right with Phoenix
"Mars lander exposes more ice. Tests suggest more area must be uncovered to collect proper sample."
"Mars bake test hastened after oven short circuit."
There are also various other problems, such as with memory and radio transmissions, with known and unknown causes. And these are the announced problems.
I realize it's a complicated mission and craft with work-around capacity if not redundancy, and I'm also thinking that expectations may have to be scaled back. Maybe way back.
Arf