Today (25-February-2014) at 09:49 UTC an deep earthquake took place in Hamarinn volcano (is under Bárðarbunga volcano at GVP database as Loki-Fögrufjöll). This earthquake had the depth of 29,6 km and magnitude of 1,8. This means it was created by magma movement rather then tectonic forces.
Hamarinn volcano last erupted in July 2011 [coverage of that can be found here] in an minor eruption that lasted for few hours but resulted in glacier flood in the area. Since then activity has dropped, but over the recent months it has been picking up again slowly. So far it is just earthquakes at depth. Harminn volcano is highly active volcano, even if it is not constantly erupting at the moment. The reason is that it is almost centre above the hot spot fuels the eruption activity in this area.
Blog post updated at 21:28 UTC.