1 “Do not judge, or you too will be judged. 2 For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you. 3 “Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye? 4 How can you say to your brother, ‘Let me take the speck out of your eye,’ when all the time there is a plank in your own eye? 5 You hypocrite, first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother’s eye.

seems like jesus is saying it is ok to judge as long as you are not guilty of the same sin. it doesn't appear to be a blanket don't judge anyone for sin because you have sinned. further, it appears from verse 5 that as long as you aren't currently engaging in the particular sin, you can judge another for that sin.