JScript problems

[The Dong]

(In Firefox 2 AND 3)

Is it just me, or is there a more general problem?
These pages are examples I cannot get to work:

(Click on route map links)
http://www.bikely.com/listpaths/country/253/region/5390/city/5947

(Video broken: Please turn on JScript, yeah, uhuh)
http://news.bbc.co.uk/1/hi/video_and_audio/default.stm


It's only happened very recently and is affecting many other sites I use 
as well.