Running ATI11 on Vista Ultimate. Can mount images fine, but unmounting completely locks Vista up. I mean locks up so hard I have to do a hardware reset. Basic system specs: Mother board is a DFI Lanparty w/nforce4 ultra chipset. Athlon X2 3800+ CPU 2 gigs of ram. Single SATA 3 HDD. OS is Vista Ultimate 32 bit. TrueImage 11 build 8053. BTW, this is a dual boot system. I can boot to the old XP Pro partition that has ATI9 on it and can unmount images with no problems. Thanks.