Driver Sweeper 3.0http://phyxion.net/Driver-Sweeper/Driver-Sweeper/Version-3-0-0/
Edit, seems this guy summed it up even better.
Edited by KILLER_K - 5/24/11 at 12:25pm
Phyxion begins Driver Sweeper development as a free alternative to Driver Cleaner.
Guru3D and Phyxion enter into an agreement and Guru3D Driver Sweeper is born.
Phyxion becomes unhappy with his agreement with Guru3D, which restricts him from linking back to his site, using advertisements, donation links, and/or removing the Guru3D branding.
Phyxion had basically signed over ownership of Driver Sweeper to Guru3D along with a contract for continued development of future versions.
Drama occurs when Phyxion uploads a version of Driver Sweeper to Guru3D which violates the terms of their agreement.
Hilbert Hagedoorn is pissed when Phyxion refuses to develop Driver Sweeper any longer unless the prior-agreed contract terms are changed.
Phyxion and Guru3D ultimately agree to end their relationship after more drama.
Phyxion is forced to fulfill the remainder of his contract term with Guru3D or face legal action.
Guru3D Driver Sweeper 2.1.0 is released, contract ends, future versions of Driver Sweeper are permanently banned from Guru3D.
On the same day, Phyxion makes a cosmetic change to Guru3D Driver Sweeper 2.1.0 and releases it as Driver Sweeper 2.5.0 on his personal site, development continues.