From today’s Nature homepage: “Glacial lake hides bacteria” Mark Peplow; “Icelandic bacteria make splash in Mars debate” See http://www.nature.com/news/2004/040712/full/040712-6.html”
Also referred to from Geology:
http://www.gsajournals.org/gsaonline/?request=get-abstract&issn=0091-7613&volume=27&page=107 “Widespread bacterial populations at glacier beds and their relationship to rock weathering and carbon cycling”
Microbes have recently been found beneath several hundred metres of ice in a subglacial lake in Iceland. “Grímsvötn volcano. The lake, which is up to 100 metres deep, is covered by a 300-metre thick ice-sheet, but heat rising from the volcano below stops it from freezing entirely.” Their carbon is from the water and they seem to get their energy from “a geothermal source” has a nice picture of a rather generic looking bacterium and the volcano.

Basically, on Earth, if its wet, something will grow in it. Elsewhere?