Jaksta is a very good program. I had some problems with HTTP streams, but there are lots of free programs that I can use to download/capture them. Besides few people have this problem.

As for .NET framework you can only notice problems with it on a slow computer.

I do recommend Jaksta and Replay Media Catcher.

It's tempting to recommend GetFLV that started supporting Hulu and other web-sites using RTMPE, but the program is at an early stage of development plus nobody knows whether the program will be updated regularly and whether high quality support will be provided.

p.s. The more popular the program, the more negative comments you will see about it. There will always be some unsatisfied users whose problems can't be possibly fixed because it is next to impossible to replicate them.