Ok, somewhere in this thread I read frequency locking to 600 while making call and thought of giving it a try as I've never noticed it before and made a call to my home number and the result is shocking:
-I'm running Lehto's 900-500dsp kernel.
-Device is not running anything and connected to WiFi
-I'm using watch cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq from my laptop.
-Normally its 124800 but as soon as I make a call it goes to 900000 and stays there unless i end the call and the worst this is my home phone can go on ringing for couple minutes easy and now I'm scared of frying my device.

Below is my /etc/pmconfig file:

# Power management configuration file
enable_off_mode 1
sleep_while_idle 1
sr_vdd1_autocomp 0
sr_vdd2_autocomp 0
clocks_off_while_idle 1
voltage_off_while_idle 1
scaling_governor ondemand
scaling_max_freq 600000
scaling_min_freq 125000
sleep_ind 1

Anybody with such result and any fix for this yet? Thanks