Wysiwyg, that's weird about the childcare thing. One of the specifications in the work from home policy at my work is that you are *not* to try to combine any substantial caring duties with working from home. Yeah, maybe ok for an hour or two, or if you had an older child who was lying around watching telly, but not for whole days at a time with small children - that's what personal/carers leave is for.
Interesting. I work from home 1 day a week. DD (20months) is with me and DS is at school, so I duck out for the school run also. My boss and workplace are fine with it. I generally get 5-6hrs of work done and the rest I make up by starting early/having a working lunch break so do at least my minimum hours, usually more. I really think workplaces need to be realistic and support work/life/family. As long as your overall productivity is not impacted and your are performing well then there is no reason employees cant juggle both. There is so much productivity lost in the workplace while people gossip, catch up and have extended breaks (however good it is for 'networking' hehehehe)