[quote name='TimR' post='489688' date='May 16 2009, 11:57 AM']Don't split and reform that's childish and doesn't work in the long run as it makes you all look stupid.[/quote]
Once you've been through the 'this is how you need to improve' thing with no success and you've decided someone's irretrievable, they have to go. So how do you give them the hard word? Mostly depends on the individual and the circs, but experience has shown me that my approach works for me.
Childish? Well, I used to do the polite sitdown thing when sacking someone and 90% of the time it ended in disaster. At least two guys burst into tears, another's wife threw things at me. Another one just kept phoning me and begging to be let back in. Most just got angry and / or upset, however nicely you put it.
At the very least, there's an unpleasant finality to being sacked that can be very distressing to the sackee. And after all, why upset someone just to satisfy 'principles'.
Feeble? You could say that this is an approach designed to spare my own feelings, but, trust me, confrontation doesn't bother me; so it ain't for my benefit.
IMO, letting someone down gently is better than a slap in the face. It's a lot kinder, IME.
Edit for: Work-wise, I handle this the other way as eight suggests.