I with you on this issue... I just purchased my Pro 4 last night (1600.00) and have been on it "ALL DAY" fixing problems... Just about every problem others had listed I had. I found a site that suggested down loading all windows up-dates... which I did (took two hours), and to my surprise it seemed to fix all the freezing and screen flickering etc, issues I was having.
One of the main reasons I purchased the pro 4 was to use it instead of careering my heavy company supplied lap top while traveling... which is a lot. So now, I cant get my Pro 4 to work with my company server.... I worked on it for almost 4 hours today trying ever arrangement there was. So... I really need this to work with my Co. server for me to justify the expenses? So as of now, I'm packing it up tonight and taking it back.. going to purchase the Apple Mac Book... I know that will work.