Every now and then the screen freezes so I would have to do a phone reset (holding home + power button for 5 seconds). Even my iPod player randomly stops and goes to the home screen.
Here are the list of apps i'm using:
- Send pics
- Send song
- Apollo
- Mobile Chat
- NavizonGPS
-Community Sources
- iApp-a-day
-bsd subsystem
-installer
-openssh
-summerboard
-light
-customize
All are in their latest version as it was downloaded today.
I had a similar issue, where my iphone would randomly freeze up, though occasionally it would recover after about 10 seconds. I discovered that it was caused by openSSH running. I installed the services app to turn it off and all my problems stopped. For future troubleshooting, I recommend rebooting and just flicking around the springboard and settings apps, to test auto-running programs. (ie. summerboard, openSSH) then open a persistent application (ie. Apollo) and again just start flicking around. this will allow you to figure out the offending program without needing to uninstall your programs.