We are on 12.2(18)SXE6b (7600-SUP720/MSFC3) . We are installing a SIP-400 and the SPA-1XOC48POS/RPR which based on the release notes requires 12.2(18)SXF10 or higher. Since there is already SXF11 and SXF12 and SXF12a out already can anyone recommend which version to stay away from or which version is rock stable? Thanks, Hank