SCCM 2007 USMT: 2 Software Packages Not Installing

Here's a weird one, and as is often true of IT in the real world, a work-around will serve (as opposed to an actual fix). The issue: running a hard-link USMT task sequence, 2 out 16 of software packages do not install.
What I’ve done is duplicated a tried-and-true task sequence, and added in the capture and restore USMT tasks. The user files and settings migrate fine, but Java and the Cisco VPN client do not (and they install fine from the original task sequence). Searching the ccmexec.log for the package number for each program turns up nothing.
I’ve moved the restore USMT task to after the Setup Windows and ConfigMgr task and before Install Software, to the end of the TS, and also to the end of the majority of software installation, but just before Java and Cisco installations.
The result is consistent: the user files and settings migrate fine, but Java and Cisco do not install, not is there a mention of either package in the ccmexec.log.
This is using ConfigMgr 2007 SP2 R3.
Comments? Suggestions? Work-arounds?

I am experiencing this very same issue. Has anyone come upon a solution?