Windows 7: Speedup upload speed

I have an ISP that advertises speeds of DL, up to 1.5 Mb and UL, up to .384 Mb
I am experiencing a degradation of Upload video on my Skype account. So I did an internet speed test, SPEEDTEST.NET, with the following results. DL 1.17, UL .26 and a ping of 29MS over 100 miles.
A month ago I did not have any video problems.
What could be causing the slowdown and can I fix it without buying the faster broadband package? I am otherwise satisfied with the broadband I have.

It's not something you can fix, except to find a new ISP. ISPs, especially crappy ones like Comcast and Charter, tend to oversell the bandwidth they have available in any given area, which is why you're seeing a degradation in upload speeds. Ideally the upload/download is symmetrical, but rarely will you see that except in business packages and dedicated lines. Beware any ISP that sells internet packages with a upload speed that's less than 1/3 the download speed. It means they've already overloaded their infrastructure and their service will only get worse as time goes on. All the focus goes to download speed in those situations. You can demand a refund for them not providing the bandwidth they sold to you, but I doubt that will get you anywhere.