My iGoogle widget for Latitude keeps showing me at my home address even when I am elsewhere. Only on my iPhone does it show my location accurately.

Is this because my home computer is connected to a wifi network and my work computer (where I see the inaccurate location on a desktop) is not?

Even if that is the case, I still don't understand -- why doesn't my phone's Latitude app update how my location appears in the iGoogle widget (or even on the Latitude site on my work desktop)? Could it be because my computer at home is always on and it's updating from there?

Any insight would be much appreciated. thanks!