ATMega32 digitalRead and write trouble

Using Arduino Microcontrollers
10

Thanks for your suggestion coding badly! That has shown that my single input seems to be weirdly triggering more than one bit:

Serial.print( PINA, BIN );
Serial.print("-");
Serial.print( PINB, BIN );
Serial.print("-");
Serial.print( PINC, BIN );
Serial.print("-");
Serial.println( PIND, BIN );
Serial.println("");

// When nothing is active (The 2 trues are probably due to Serial data? TX, RX pins)
0-0-0-10001

// PD7 set high (physical pin 21)
0-0-1-10010001

// PC0  set high (physical pin 22)
0-0-111-10010001 // for a about 3 seconds
0-0-11-10010001 // for a about 3 seconds
0-0-1-10010001 // settles

// PC1 (physical pin 23)
0-0-1111-10010001 // for a about 3 seconds
0-0-111-10010001 // for a about 3 seconds
0-0-110-10010001 // for a about 3 seconds
0-0-10-10010001// settles

WTF?!  :(