AC Light Dimming [success]

techie:
Hi all! I have built the circuit from here:http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1230333861/15 -

And it works, except for then the dimming value gets low. It works great when close to 100 (dim) to 30 (75% bright) range, but it stays at about 75% bright all the way down to a value of 0. If I just turn the Arduino pin to HIGH, then I do get full brightness.

Any ideas? I have checked and rechecked my layout and it seems like if there was a wiring problem it just wouldn't work at all.

Your link is not working here...