Odd PIC/Hardware(?) issue

[sinoteq]

My theory is:
Because GPIO2 is a Schmitt trigger input it requires 0,8*VDD as High voltage level. That would be 4V in your case. So this design is not really the good. Can you move the input because it is only GPOI2 that has this kind of buffer. If you have a TTL input buffer you get 0.25*VDD+0.8 =2.05 Volts and the problem should go away. Or change the VDD voltage to 3V and run the PIC on the lower voltage.

[Probotics]

Doh: You know I thought something on the input port might have been the issue, searched through the data sheet, found notation that the Schmitt trigger was there, checked the voltage necessary to trigger it....... and somehow read 0.8 VDD as 0.8 volts instead of 0.8 * VDD.

That's gotta be it. Thanks