SCO's copyright claims and effort to seek licensing fees could slow the advance of Linux into corporate data centers, said George Weiss, an analyst for Gartner Inc. ''Companies are suddenly going to realize that they at least have to look at this issue closely,'' he said. But Linux supporters said most corporations viewed the SCO campaign as mainly a dispute between two companies, I.B.M. and SCO. ''The Linux momentum continues to be strong,'' said Stuart Cohen, chief executive of the Open Source Development Lab, a corporate consortium backed by Linux supporters, including I.B.M.