Really? I'm sure everyones heard about the GPS problem. Just because you hear about something doesnt mean you've experienced it. As a lot of Galaxy S users have noted, as well as several publications and webistes, some have experienced the issue while some have not.
No one has said they havent heard of the GPS issue in any of these posts, they just said they arent having them, so i dont know where you're coming from.
The fact is that most users don't know how to test the GPS rigorously under controlled conditions, so anecdotal reports are unreliable.
Every Epic 4G has GPS bugs. Some of those bugs only manifest themselves under certain usage patterns. There are people who have not experienced the bugs. I do not believe that anyone who has correctly tested the cases known to trigger the bugs
has not experienced them.
Here are two different GPS bugs known to exist in every Epic. To help see them, download the Market app GPS Test by Chartcross Ltd.
1) After using your GPS successfully, and confirming the satellite locks in GPS Test, close that utility and all apps that use the GPS sensor. Also do nothing that might clear the GPS cache as a side effect, such as playing with certain settings. Do not reboot the phone. (If you don't know for sure which apps use the GPS or which actions might clear the cache as a side effect, then just put the phone away on a shelf to be sure.)
Wait 24 hours.
Open GPS Test, go outdoors and see if you get multiple locks on satellites used. What should happen with a working GPS is that it will lock on multiple satellites within a few seconds. That will not happen here.
This bug has been isolated in controlled tests to be dependent on time-sensitive GPS data stored in a cache. That cached needs to be refreshed from time to time, but the refresh does not happen properly. There are workarounds that can force the cache to be refreshed.
So if you use the GPS under conditions that happen to have a fresh cache, you will not experience the locking bug. That does not mean the device does not have the bug.
2) On occasions when you do get successful satellite locks, as shown in GPS Test, look at the estimated accuracy that utility shows. It will always show 30.0 meters (or 98.4 feet if you have selected that unit of measurement). This behavior is a bug, universal on all Epics. What should happen with a working GPS is that the estimated accuracy reported should be dynamic, constantly changing from moment to moment with conditions. That will not happen on the Epic. All Epics, once a lock is achieved, will always report 30.0 meters.
BTW, these documented bugs are specific the the Epic. Other Galaxy S phones also have GPS bugs, but they are not the same bugs as the Epic's.
p.s. To address the OP's question more directly, there is no reason to believe that rooting will fix the GPS bugs.