I open several windows each morning in SM 2.19, with several tabs in each. These windows stay open about 10 hours day. CPU usage would be 3% or so on my quad core XP machine.

Often, I noticed CPU usage of 30% or so by the end of the day. I saw this problem before SM 2.19, but didn't track it down until recently. I discovered this high usage was caused by two different web pages:

http://www.nytimes.com/

http://weather.rap.ucar.edu/satellite/displaySat.php?region=LWS&itype=vis&size=large&endDate=20061007&endTime=-1&duration=3

Closing these two pages drops the CPU back to 3% or so. I can also prevent the ucar.edu page from using the CPU if I stop the animation by clicking on the Stop button.

Is this behavior caused by the web page coding, or is it indicative of a flaw in Seamonkey? My workaround is to Stop the ucar.edu page when I'm not viewing it, and close the nytimes.com page when I'm not reading it; interestingly, it's the Times home page that causes the problem, not it's articles I get from clicking on links in the home page.
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