if you would like to flash the 1.40 radio, here it is:
ftp://ppcgeeks:ezupload@up.ppcgeeks....1.40_radio.rar
you can flash it with ruu.rar from imcokeman's dir:
ftp://ppcgeeks:ezupload@up.ppcgeeks....N/roms/RUU.rar
currently I am running something along the lines of the alltel OS, 1.40 radio, and the newest sprint drivers. I just had my first lockup where LED blinks but phone wont come out of standby. To me, this proves that a driver is also causing problems.
Id suggest flashing back to 2.09.651.3, alltel's official update, or a custom rom with 1.40 radio.