screen intermittently unresponsive / freezes

[1lazysheep]

i've searched, but didn't see anything that was exactly like the problem i'm experiencing.

intermittently, my screen becomes unresponsive and "freezes" up. doesn't matter where i touch - there is no response. even the on/off button on top ceases to function...well, i have to push it 3 or 4 times and then it'll turn the screen off. the problem is solved by doing a soft reset. or i can leave the phone alone for 5-10 minutes and it'll "become normal" again.

i've tried to look for a pattern of when this happens, but it's completely random. this happens after leaving the alone phone overnight, or a few minutes, and sometimes it happens after i've used it for 20 or 30 minutes.

i'd like just add that the screen is great when it's working properly - it's highly responsive and takes multiple fast inputs. btw, multiple fast inputs has never caused this problem.

below are the rom/radio i'm using and the installed apps. i'm not sure which rom the phone had when i bought it (~3 weeks ago), but i installed the "official leaked" 3.03.651.2 rom after that. then i did a hard reset and installed the "official" 3.03.651.4 rom and that's what i'm running now.

ROM: official 3.03.651.4
Radio: 3.42.30

Apps:
garmin mobile xt
google maps
finger friendly friends
OZ instant messaging
resco keyboard pro
spb (brain evo, full screen keyboard, mobile shell, phone suite)
sprint mobile email