IE7 in Vista runs horribly slow suddenly. [comcast internet] [account internet]

admin / June 18th, 2011/ Posted in Operating Systems / No Comments »

Q: Im running Vista now for weeks without problems. My is flying as usual. Then a few days ago it started to slow. Today is so bad it took me 34 seconds just to load Google: shocked:

I know its not a hardware problem because there are 2 other accounts on my PC and the Internet is fast as usual for them, its just my account, that is bad for one reason or another. I am also using Virtual PC 2007 on XP running under my account. The Internet is normally under my account too.

Nothing Ive tried has worked so far: Clearing temp files, system restore, I copied the IP settings of the other accounts of mine tried the reset button advanced settings in IE. Anything helps. I do not remember changing anything, or anything that might cause this.

Anybody not have ideas? It feels like I am back in 1997 to operate a 14.4k modem .


Re:It wasn't the phishing filter. Enabling/Disabling it made no difference. I finally ended up doing a complete PC restore to a backup a made about a week ago. Everything was working again. Then last night all of the sudden I got the problem again. Same exact thing as before. Pages take 2 minutes to load and CPU is maxed out the whole time. Ended up having to do another restore to get it working again. I'm still trying to figure out what's causing this.

Re:There is an update (http://support.microsoft.com/kb/928089) to the phishing filter that improves performance.

Re:I have noticed that the phishing filter in ie7 slows things down noticeably. I disable it and that helps.

Re:OK, I might be getting slightly closer to the problem.

Found this page: http://mygreenpaste.blogspot.com/2006/1…e-of-sluggish-internet-explorer-7.html (http://mygreenpaste.blogspot.com/2006/12/case-of-sluggish-internet-explorer-7.html) which describes a somewhat similar problem to mine, but this one was caused by the Phishing Filter. Anyway, I went through the same debugging techniques as this guy (using Process Explorer to trace the utilization). Here's what I came up with. Every time I access a page, IE is creating 6-8 thread instances of ntdll.dll!Rtlintegertounicodestring+0×67 with each one using 10-15% CPU utilization. So there is where my bogging down is coming from. For example, when I load amazon.com, I can watch the status bar as it loads and each one of the 60+ objects on the page gets one of these Rtlintegertounicodestring threads assigned to it for several seconds. They just keep generating over and over until the page finally loads a minute and a half later.

When I do the same test on the other (functional) user account on my PC, the ntdll.dll!Rtlintegertounicodestring+0×67 threads never go above 3% and they are gone almost instantly.

So there it is. Now, anybody know what the hell ntdll.dll!Rtlintegertounicodestring is? LOL! :laugh: Google isn't giving me much here…


Re:Originally posted by: guy
Click the start button and type "internet". Click the IE shortcut that says No add-ons. See if browsing is still slow.

I already tried running in no add-ons mode. It's no different. As soon as I try to load any page, both of my CPU cores shoot to 100% and stay there until the page finally loads, which is usually taking 30-45 seconds per page. However, the more complex, the longer it takes. I just tried Amazon and it took well over a minute to load.

I keep going back and forth between the other user account on my PC that works fine and for the life of me, I cannot see any setting in IE that is different.


Re:Click the start button and type "internet". Click the IE shortcut that says No add-ons. See if browsing is still slow.

Re:Originally posted by: guy
I would run good spyware software and also anti-virus. It really sounds like you've been hijacked or have a trojan.

No, it's not that. I run NOD32 & Win Defender. Both full scans come up clean. I can watch my network traffic and it just trickles when loading pages. There's barely anything going through. It's the CPU utilization that's killing me. I've narrowed it down to that.

Did some more digging on google and found some other instances high CPU that were caused by bad add-ons to IE. However, that's not my problem either. I've run IE in "add-ons disabled" mode and it still does the same thing. Also tried disabling the phishing filter and nothing. This is beyond frustrating…


Re:I would run good spyware software and also anti-virus. It really sounds like you've been hijacked or have a trojan.

Re:Originally posted by: SoundTheSurrender
Does firefox work?

Just tried it. It works perfect. Everything is popping up instantly in Firefox.

Also, I just noticed this… When I use IE7 and try to open a page, say Yahoo, my CPU utilization goes up to 100% on both cores and it just sits there chugging away at 100% for literally 25-45 seconds per page before it finishes loading. WTF is going on here :disgust:


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