1.I am using the ADSL 2MB/s.
2.When I am using the IE to surf, the delay is obvious, something like that only a little part of the web can I see in the IE window at the first time of click a URL(www.pconline.com.cn) and wait 50 seconds or more until the whole page is available.
3.When using the FireFox, the delay vanishes.
I'm using Firefox 2.0, and the first two times I tried to access your example web page, their server timed out. On the third try, there was a long wait before I was able to access the page, and it continued to load for a long while.
So first, I don't think that the browser has much to do with page loading. Generally, it's on the server side, and there are several to many reasons for slow page loading.
Here's just one example of the types of things that web site developers would look at in diagnosing slow pages:
http://textpattern.com/faq/136/diagnosing-performance-problemsUnless there is an obvious hardware issue such as the server simply being overloaded due to the number of requests, virtually all of the slow load problems are design related.
Again, I could probably be proven wrong, but I don't believe that the problem of slow loading pages are either browser related, or, referencing your original question, avast related. They are just poorly designed sites, and unfortunately, there are a lot of them out there.
Edit:
I suppose it's possible that IE7's phishing filter might slow down access to web pages, but I don't use IE, and I couldn't comment further. If true, turning off the filter would be a trade off between safe surfing and faster page loads. It would be your decision as to way you would want to go.
Here's a forum thread that discusses the issue:
http://groups.google.com/group/microsoft.public.internetexplorer.general/browse_thread/thread/bf84be3fb2a9232/a454b8dda6847dac%23a454b8dda6847dacHowever, as it relates to the specific site you pointed out, my guess is that it's a design problem.