Streaming Video via Home Sharing Problems....

Hey Guys thanks for helping me out on this one,

So I am usually very good at fixing problems but this one has been a tough one.

Usually I purchase movies on my netbook and use homesharing to stream to my iphone, since my netbook doesn't support HD and isn't fast enough to render that kind of video. Before I just had two movies and they played great with no waiting and everything worked fine.

Last night I purchased three new movies with a giftcard I got for christmas. Now the streaming that I normally do is very very slow and can only play about 40 seconds of video before stopping to buffer.

I have a fast internet connection, that isn't the problem, but what is going on? Is it that I have too many movies now? Or do you think that it is a setting that went amiss. I would really like to have this feature brought back to normal speed, otherwise my movie purchases would kind of been a large waste of money.

Thanks guys! Any help would be much appreciated.