I rooted my precedent recently and have had some issues. I had to uninstall all of my market updates to be able to download any apps. I constantly get a notification that says "google talk authentication failed". and none of my apps send push notifications and I really don't know what is different about my phone after the root. what exactly are ROMs? Is it in my best interest to install a ROM. and how do I use titanium backup? what does it do?