[Viventis]

I had this problem with just a few cabs installed:
Google Maps
HTC Wifi Sharing
DHarvey HTC Program Tabs Fix
Dusk 6.5 Lockscreen 3.0

I also have a holder with a magnetic closure.

After a hard reset, everything returned to normal.

One day with no cabs and the magnetic holder and all is still fine.

I have re-installed all the cabs except for the Dusk Lockscreen and all seems fine so far.

The two things I get out of this is that some cabs (in my case the Dusk Lockscreen) causes this to occur or possibly it is the longer term use of the magnetic holder. I will monitor that.

BTW: I didn't mind the change too much except that when I received a call with the device in the holder, for some reason the "ignore with text" was always activated. I wasn't able to answer calls regularly.