Hi, Running Centos 5 (32bit)... running a server with 4gb of RAM and it's shows up as: [root at ubercore1 ~]# free total used free shared buffers cached Mem: 3369544 2549668 819876 0 29008 2382360 -/+ buffers/cache: 138300 3231244 Swap: 6291448 0 6291448 I know 4gb is the limit for a 32bit OS but i thought it would be able to use all of it? Is there another kernel i was supposed to install? --N