This is mysterious. Using the widget, I just got a download speed of 274 kb/s and an upload speed of 358 kb/s.
Going directly to the speedtest.net sites and running the tests there, I get the following results:
From the Portland test site:
And from the Bangor test site:
For me, the Bangor test site consistently returns far better download speed results than the Portland site. Also, I wonder why there is such a discrepancy in download speeds between using the widget and going directly to the test sites? No other programs or downloads were running on my PC during any of the above tests.