SP-1 due Q1 2011. Windows Vista on SP 2 + Platform update Windows XP on Service Pack 3. Mac OS X on 10.6 (Snow Leopard). Ubuntu at v10.10 (Maverick Meerkat) Redhat/ CentOS are on Enterprise Linux 6.0/5.5/4.8. Linux Kernel at 2.6.37 and 2.4.37 (no change to 2.4 in last two years).