having lots more success here, so good luck to the rest of you, and hang in there. Today there have been no accidents, and regular wees, and even one poo. DD has been very pleased with herself and is racking up the stars on the star chart and telling everyone she sees of her mighty achievements. 
Before that we had 3-4 days of lots of holding on, including a bit of distress - her saying her bottom was hurting, dancing about, asking to sit on the potty every few minutes but then getting up again without doing anything. Frustrating for us too, especially when after several hours of desperate dancing about you have to put the bedtime nappy on and she wees in it straight away. I saw another thread on here somewhere that suggested just not to put the nappy on during the day at all. In our case she can make it through the day sometimes without a nap so she's mostly been dropping the nap, but one day she did have a nap in a pull-up but was still dry when she woke. So you could try napping without nappies, just leaving the nappies for overnight. I would be surprised if a child could go from morning to night without weeing at least once. Although having said that, DD managed 8.30am till 4.45pm on Easter Sunday, even though she drank lots.
The frustrating thing about potty training for me is that there is no template and really very little advice you can give. I've done it twice before and it doesn't get any easier. You think you're making progress and suddenly you're not, and then other times you can't possibly see how it can get any better and suddenly they get it. I think as long as we stay patient and kind, praise when it goes well and ignore any accidents, they get it eventually. Some take longer than others, but they all get there in the end. My boys took months to get it right, but things seem a bit quicker this time, perhaps because DD is older than they were.
Hope things are getting better for the rest of you.