I can't help with the hamster issue, I'm afraid, SW. I'd be tempted to get rid of the creature, but I'm in a bit of a "there are enough hassles in life without adding more" mood.
Hope BB and Conker are doing well. And the new mums are hanging in there, knowing that the crying and sleepless nights do come to an end.
Dare I ask for more insights into how other April 2009 babies are doing on the potty training front?
DS1 did it without any hassle, so I am woefully unprepared for A, who just doesn't get it. CM and I agreed to stop trying before summer holidays, as it seemed to be causing him some anxiety. He has gone bare-bummed a bit, but frankly never done much in the potty or toilet, other than a few pees chez CM and a few pooey farts (TMI!) chez Auld.
Yesterday CM & I decided to bite the bullet, and he went into pants. Peed in pants in the morning, peed and pooed in pants in the afternoon. Fab result.
This morning I was busy with DS1 and realised A had slipped upstairs v quietly. Found him behind his cot (where he has never gone before, was as if he was hiding, he'd pulled it out away from the wall and was between it and the wall), with poo in nappy and therefore also on carpet. Barf. Cleaned up, told him we don't poo on carpet as it's dirty, showered him off, went out.
Asked several times while out if needed pee/poo, to no avail.
Came home, he peed on the terrace as soon as I left him alone for a mo.
This afternoon, got up from nap (w nappy on), and before I could change him into pants, phone rang. I came back, he said "poo" and went to the loo. Poo was in nappy, plopped into toilet when I pulled nappy down. He looked very relieved and said "good boy, Mummy?" in such a hopeful little voice. 
DH's suggestions:
- stress him out, tell him off, be really strict
I pointed out that he is already stressed about it.
- get him constipated so he has to push and feels what's happening
My feeling: he's not really ready. I'll give it 2 weeks and if there is no progress shelve Project Potty for a month or two.
God, if you have read that poo-ridden screed, you deserve a medal.
Any ideas?