How can I add a TV to ATT Uverse?

I have ATT Uverse and have a total of 4 TV's connected (no HD service) and then the internet connection as well. Over a year ago the install tech said that 4 TV's was pushing the limit as far as splitting the signal goes, but I never had any problems until now. So suddenly this week all of the TVs would freeze up randomly; resetting the set-top boxes and gateway didn't help. So I disconnected one of the TVs from the splitter and that stopped the freezing problem, but now I have a TV we can't watch and a set-top box we are paying $7 per month for that I can't use. So my question is, is there some type of signal booster available to allow U-verse over four or five TV's in the same house? Are there better quality splitters out there that would preserve the signal better?|||call in to get some tests on your line done...it will help determine whether or not your connection is working properly inside and outside of your home...after that...a tech may be needed, of which, any reputable company, if deemed on their end, will send a tech out for free...|||From what i know about it, there really isnt a "signal booster" that i know of. If I were you, i would switch from Uverse, and go with Tivo or Direct TV with DVR. I personally dont like or suggest Uverse. Just a suggestion.