I tend to find the biggest problem is when they do not accept the limitations of the situation. Particularly when you have highlighted the pertenant one(s) as issues before as there is sometimes the attitude of "you're only doing this so you can say 'I told you so'". As they never say this outright I cannot answer them with "No. I want to get the job done and would rather have done it by now and I raised it in the first place so I could NEVER say 'I told you so'".

It seems the most paranoid are...the most paranoid!!! Problems tend to be grief all round. I do find it insulting when people assume that you are making jobs harder than they really are.