Not only is it stuck in a sand trap, it hasn't communicated with Earth since March.
Nasa doesn't know whether Spirit is dead, but the space agency is diligently listening for it.
A pair of Mars orbiters has been making daily overhead passes hoping for a signal from Spirit, which became mired in sand in April 2009.
Meanwhile, its twin, Opportunity, is exploring a 90m-diameter crater and will move onto another target in several months.
http://www.news24.com/SciTech/News/No-word-from-stuck-Nasa-Mars-rover-Spirit-20110102
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