Thanks Gwen86. I am really nervous about it as I was told it can be anything from the specific to just a general chat. I suspect mine is going to be a 2 hour viva. The questions you gave are really helpful. Beats me googling "nasty phd viva questions" and "horrible viva questions"!

So I am doing a viva in just over two weeks. I have reread the thesis twice but was wondering if anyone has any specific advice? Unfortunately I am working full time as well, 8-8, five days a week and cannot give the length of time that I would like to the viva. My examiners are unknown to me, both internal and external though I hear they are nice.

Thanks everyone. I think it is unacceptable as well but there is no support from the uni.
I actually laughed when I read about the school's guidelines. There is no such thing for us. Literally. I was in 16 months and was then handed a 2 page document from a friend stating the submission requirements including the font and referencing style.
At the moment I am mid-chapter writing which will give me half of the phd written up. It should take about 3 more weeks to write up. I'll email it to the suppie and give him 2 weeks to reply- if nothing I am complaining.
My school only gives us one supervisor each. I was thinking of asking another but unsure who to go to or how to approach the person.

Thanks everyone!

Thanks satchi. Sad to say that your response was more encouraging than my entire School. It i a very political place and a lot if fighting.
I have kept the list of all meetings from the first time I stepped inside the gates of the place. I can show that in 2 years I have had nothing reviewed at all despite emails asking for feedback.
The stalking sounds like a wonderful plan except my supervisor wouldn't care. Pretty much given the run of the place. Very irritating. On a side note if any Phders wanted to volunteer for the position of stalking I wouldn't say no :)

The problem is trying to get in the door to speak with supervisor. It is next to impossible. Cancelled meetings and no shows. Very irritating. I have spoken and said I would like more feedback and it just has not happened. Feeling really frustrated and could throw this whole thing right now. for the last 6 weeks I have done barely anything. Just cannot motivate myself. Part of it comes down to supervisor. I don't know if what I am doing is right or wrong and am sort of afraid to move on work.

Having problems with my PhD supervisor. Nothing I have written has been looked at and I am half way through the process. The problem is there is no one else to supervise me in my school. The supervisor is a decent person but really lazy- frequently seen by others in the cinema at 3pm or having coffee at 10am in hotels away from the uni. Waiting since December for work I have written to be looked at. Meetings happen every 3 months or so and usually follow the format of sorry i haven't read what you have written or, I've ben really busy elsewhere. On a couple of occasions it has been remind me what it is you are doing again.
I already switched from my first year supervisor who was surprisingly even more terrible. I don't want to get a bad reputation with others and yet I am not progressing as others are. Constantly doubting whether the next thing I am doing is right. From conferences and people I have met I feel I am going in the right direction. I have a sneaking suspicion that my supervisor is waiting for the whole PhD to be written and then corrected.
Any advice?