Seems it only happened to me. I am running Altiris 7.1
Checked :
Incremental import
Default location:
http://www.solutionsam.com/imports/7_1/patch/windows/pmimport.cab
Checked :
Automatically revise Software Update policies after importing patch data
Enable distribution of newly added Software Updates
Unchecked :
Disable all superseded Software Updates
I have scheduled task to run Import Patch Data for Windows every night at 10:00. And it show as completed.
What I suspecting is something missing from "Vendors and Software", so I update it. And make sure all "Microsoft Office" components are selected.
I've also tried to unchecked "Incremental import", I am expecting it will force to import everything in FULL. But after 14 hours import, it failed at the end. And also no luck in getting those missing update.
So, next plan is, check the entire "Microsoft" in Vendors and Software list, and re-run PMimport again.