IE shows once when running and usually will show another for each tab running.
1. Why are there (2) iexplore.exe showing in Windows Task Manager?
This is most likely due to the startups you mentioned
2. do you have any guesses as to what that 1-2 minute delay is after the desktop appears? What is loading/computing here?
The steps I had you run are the best to keep your system running smoothly.
3. Any recommendations for speeding things up even more? Do you have a 'tweak' program you recommend?
This is a program I used years ago but in the last year I have changed to Avast for my AV and have found that it is a lot less stressful on system resources which will slow your system down. Some of your slowness is due to F-Secure, Weatherbug, and surprisingly SpeedUp My PC can cause this also.
4. In the downloads list for Charter Security (F-Secure), "F-Secure Content Classification Engine shows "will try again". All of the other items in that list show "installed". Is that something you can answer, or should I direct the question to Charter?
These miracle speed up programs and registry cleaner programs tend to cause more harm then good. We do not recommend using them for that reason. I stopped using weatherbug over 2 years ago because of the constant slowness I got using it.
The speed program honestly I have never heard of but like I stated above..most are useless in my humble opinion.