Is it normal for there to be constant disk io? When SAS is running, SASCore64.exe is constantly reading and writing to my disk. This is showing up in Process Explorer. It shows SASCore64.exe constantly reading and writing in chunks of 15-30 MB. The strange thing about this is, the disk io does not show up in Resource Monitor. If I shut down SuperAntiSpyware, the disk io disappears in Process Explorer. Any ideas?