Resolution weirdness

Is there some explanation why the resolution in google earth
is
different on my computer at work and at home? Can't
understand. In both
places I installed the latest version of free google earth
and for
example this location ("Culham" lat=51.6524253804,
lon=-1.27181632208)
was very clear at work (could easily disdinguish cars and
shadows and
houses) but at home it is quite blurry. 

Thanks.

I'll reply to myself after finding out the reason. At home I
had an
earlier version of google earth and updating it to the
latest did not
work. After removing previous installation and reinstalling
google
earth same resolution was reached. Hope this helps somebody
sometime.