I'm with ya to buddy :/ was using the same eboot for over a year with no ban. recently played was having issues with joining online for some odd reason.
At first I was very reluctant to wanna consider maybe changing the eboot if the eboot was the problem. So I did and not only have two accounts been banned since changing I know can not remember where I got that eboot from that I used for a year or two straight with absolutely no problems :/