Yahoo & IE: Investigating Processor Usage

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Using Internet Explorer 9 as the primary browser has led to compatibility issues with Yahoo and Gmail, particularly with Yahoo causing high processor usage in IE. Screenshots indicate that even when idle, Yahoo Mail in IE significantly activates a second processor core, which does not occur when using Yahoo in Google Chrome. This suggests that Yahoo may be utilizing resources inefficiently or potentially for unknown purposes in IE. The conclusion drawn is that switching entirely to Chrome could resolve these performance issues, but the underlying reason for Yahoo's behavior in IE remains unclear, raising questions about whether Yahoo is using Flash or other resource-intensive processes.
Andre
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So probably from experience and convenience I use IE (9 now) as main browser and secondary Chrome. This came from the time that Yahoo seemed not compatible with Chrome and gmail is still very uncompatible with IE for me. It doesn't work - but that's not the issue now.

I also found that it as Yahoo that tried to saturate the processor in IE as can be seen in these screenshot (only one window IE active and one window paint for collecting the screen shots).

Starting up Yahoo and putting in password, selecting mail:

dy395l.jpg


Steady state yahoo mail on, idle, no actions (notice the second branch of the processor).

r013lu.jpg


Terminating yahoo,

1jxllk.jpg


So then I tried yahoo in google chrome, where it had not worked properly before and the processor worked fine, going back to idle when nothing happened.

So that means that the simple solution is to forget about IE and switch 100% to chrome, but my question is what is Yahoo doing in IE with that second branch? Stealing processor time for unknown purposes?
 
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Anybody any idea why yahoo in IE sends the second core into high activity. Nothing else does this.
 
Is yahoo flash based?
 

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