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Using a VPN Clobbers IE 8 Performance

 December 7, 2009

A significant change in IE 8 was the increase in the number of active connections per hostname from two to six. This allowed pages with many embedded resources (e.g. images, CSS or JavaScript) to be loaded much more quickly because more requests could be executed in parallel; reducing queuing and the amount of Blocked time seen in HttpWatch: Recently, we noticed that IE 8 sometimes reverts back to the earlier limit of two connections per hostname. The connectivity enhancements in IE 8 are documented as requiring broadband connections: But we were seeing the number of active connections being reduced over … Continue reading

Even more problems with the IE 8 mixed content warning

 September 17, 2009

We have previously written about the pointless and confusing ‘Do you want to view only the webpage content that was delivered securely‘ message in IE 8. It is displayed by default when a secure web page attempts to use non-secure content such as images, javascript or CSS. That post has been so popular that it attracts 40% of the traffic to this blog. The IE 8 mixed content dialog is pointless because 99.9% of web users just want it to go away and let them get on with what they were doing. For the 0.1% of web surfers who do … Continue reading

Fixing the IE 8 warning – ‘Do you want to view only the webpage content that was delivered securely?’

 April 23, 2009

In a previous blog post, we talked about the problem of using HTTP based resources, such as images, on a secure HTTPS page. Internet Explorer interrupts the download and displays a confirmation dialog whenever it detects the use of mixed content on a secure page. In IE 7 and ealier, this dialog would cause annoyance to users but generally didn’t cause any other significant problems. This was because it was worded in such a way that most users would click on the Yes button and allow non-secure content to be downloaded. However, the wording in the IE 8 version of this dialog … Continue reading