cmpm, you have 2 forum posts with unsubstantiated accusations to judge that program on. A bit unfair perhaps? "Internet access" a risk? Well whatever, but you are not more safe by accepting everything you read or jumping to conclusions that is for sure. Always demand proofs and some logic, must be skeptical both ways - most can be revealed by doing a bit of research. Goes for Google tracking as well. Too much ranting and politics about "security", not really that big a deal. Actual dangers are elsewhere, mostly sitting in front of computer
I guess you know Microsoft knows every url you have ever visited with IE7? Just like Google does if you install toolbar and activate full blown web history? So now you must deactivate Anti-Phishing filter to be safe? Does this not make the old popular warning of Windows "phoning home" seem like a friendly gesture?
Dont think Firefox extensions are without privacy issues, some of them have a policy - and most are made by unknown people/companies. Not secure by any means. You better have a net sniffer running 24/7 if IE7Pro seem so risky. I think you will be surprised/scared or will reevaluate what internet access is... There are people involved with everything, with your argument only way to get "secure" is not using anything and definitely not internet. But the opposite is what you should do - use internet to check things out, like for example the little add-on IE7Pro. When done it would be nice if you explained why program is to be avoided. I cant find anything suspicious other than here and that is more like a confusion.
Anyway, possible Firefox appears quicker once loaded but if you disregard the strange tab shifting in IE7 I think most has to do with it using more memory for caching than IE7. If amount of memory is on level with P3 then may be not a wanted feature. Does adjust max. cache levels to available memory but still. Also Firefox definitely is less happy than IE7, Opera to release memory. Firefox hang on to cached media files much longer. I got the feeling Opera will beat both of them.