Sprint TP2 getting stuck in sleep mode

[sac65tbird]

Update. Phone is still locking in sleep mode on occasion. It appears to occur when I pass through known bad reception areas. Based on some heavy web searching, the trouble seems to point to the radio build in the released WM6.5. Some cooked ROMs claim to have removed the problem by using a newer radio build from Windows, others work because they went back to WM6.1 (which uses a different radio, of course). Some claim by shutting off the CDMA/GSM auto switching, the problem goes away. Others claim by using Task29 to completely erase all memory locations, their problems were removed. I don't believe that. Info points to the radio build. Under software info OS (21889) seems to be the version that has trouble. Nothing official posted by HTC.