App Store Applications Not Working

Question

It took a few hours but I found the solution to this problem.
Here is a brief description of what happened:
Went to App Store on my new iPhone 3G and downloaded three applications: Monkey Ball, eBay and Jott.
At first all three worked. (Monkey Ball is a great game but difficult to control)
I stopped running the applications and did some other things with my iPhone 3G. (email, safari, you tube, etc...)
I then tried to run Monkey Ball again. It showed the Splash Screen for a few seconds and then the iPhone went back to the main display. The Monkey Ball application just "turned off" and went away.
I tried to load the other applications and ran into the same problem. They would try to load and then the main iPhone display with the icons would show.
I tried to do a full reset by holding both buttons for 10 seconds. That did not help.
I was about to do a restore when the solution occurred to me:
1: Hook the iPhone to your computer and start the Sync process.
2.1: iTunes will ask you if you want to transfer your applications to your computer. It will warn you that if you don't the applications will be deleted from your iPhone. THAT IS WHAT YOU WANT.
2.2: If you have already transferred your applications to your computer, then BEFORE you start the sync you need to delete the applications from iTunes on your computer. Do this by clicking on Applications in the left menu and then right-clicking on the bad application and selecting Delete.
3: Tell iTunes that you DON'T want to transfer your applications to your computer and allow it to delete the applications from your iPhone.
4: Reset your iPhone by pressing the two buttons for 10 seconds.
5: Go back to the App Store and re-download and install the application(s).
NOTE: It will look like the App Store is going to charge you for the application again but at the last minute it will say that you already bought the application and will not be charged.
Basically what you are doing is deleting the application from your iPhone and reinstalling it.

Answer 1

The problem has to do with the iPhone OS 2.0.2. It is still buggy.
My unit at first froze, however, I was able to shut down and restart the iPhone. After restart... ALL my App Store apps stopped working (launch at first then go back to home screen). ARGGGGG !!!!!!
I noticed initially when I installed apps from my iMac to the iPhone it took:
5 seconds per app....
after 30 installed apps it took 60 seconds to install an app
after 90 installed apps it took 70 seconds to install an app
after 110 installed apps it took 75 seconds to install an app
The last app never installed, instead I got this unknown error (0xE800002d) go figure.
110 apps equaled to 324 MB... plenty of free space left. What gives?
I believe, Apple's OS has a serious problem managing flash memory, in particular in the app layer of the OS. When the OS tries to thread from one mem array to another in our case, OS array to App array, there exists too much latency and the app crashes & corrupts the iphone app kernel. The temp fix would be to just re-install the iphone app kernel upon iphone reboot.
http://www.electronista.com/articles/08/07/02/iphone.crowds.out.samsung/
I believe, Apple has incorporated some cheap flash memory from particular manufacturer(s) with slow read and write times and now they are having to scramble to re-write code in the OS to compensate for the NAND chip differentials of millions of deployed iphones they have put into the market.
http://www.forbes.com/2007/06/13/iphone-flash-memory-tech-wireless-cxbc0614iphone.html+
Let's all hope Apple can put their arms around this issue and put it to bed.
I'd like to use the apps I bought one day and not worry about the apple screen of death!