Stung by recent criticism from IBM that his comparison of Santa Cruz Operation Xenix 386 with OS/2 (CI No 845) was unfair because OS/2 is targeted at the 80286 processor, analyst Neal Nelson of Chicago-based Neal Nelson & Associates has re-run the 17 tests, this time using Santa Cruz Operation’s 286 version (first launched in 1985): this time SCO Xenix was faster in five cases with a maximum 600% difference, OS/2 was faster in four with a maximum 500% difference.