i got nerly the same problem.
QVGA Device (HTC Touch Dual)
In GSM-Mode the Signal-icon is stock. During call and when the phone is off there are the custom icons. somebody can solve this problem??? i took some screenshots to show u what i mean:
standart GSM-mode (phone is on) -
signalicon is stock
now during call - signal is custom
now phone is off - signal is custom too
who can help???
greetz sam