JMKMMRR  Upgrade install over 10.5.8 took about 30 minutes. That's the good news. Mail wouldn't send: fixed that. Gutenprint drivers for my printer are horrible! Time Machine first backup took almost 2 hours and Time machine is rendered on a white background, making it virtually unusable!! Safari is having trouble with some secure sites that worked perfectly in 10.5.8. Many thanks to the developers that were so quick to supply updates; Alsoft, Prosoft, Agile, Stunt... The whole system does seem more responsive. Star-up and Shut-down times seem little changed. Machine still has "wake from sleep" issue that is Firewire related. Pretty painful process.   
(Version 10.6)

JMKMMRR  Works perfectly for me on Intel iMac with 10.5.6. Would like to se a "save for web" option.  
(Version 1.3.2)

JMKMMRR  I agree with the previous post. I used DG2 to defrag my original aluminum iMac. It worked perfectly. My Machine was much more responsive. Totally satisfied. The customer service a Prosoft is the best.  
(Version 2.1)

JMKMMRR  Recently purchased Drive Genius2 and found, for some reason, the boot DVD would not boot my aluminum iMac. I contacted Drive Genius support via the Prosoft website, and heard back in very short order. Through a series of emails they were able to sovle my problem and provide me with a working version of the software I had purchased. The entire issue was handled with the utmost care. Great company. Great support. Great product.   
(Version 2.1)

JMKMMRR  Downloaded the updater and it worked perfectly. Created a bootable CD from my original, booted my new iMac, did it's work and away I went!! No complaints here. DiskWarrior is one utility no Mac owner should be without.  
(Version 4.1)