Problem seeing partition and Ghost file

Hi all,
This is one strange problem that only started happening since October 2008. Have never seen it in my 4 years using Ghost v2003.793. It happens in different Windows computers and in different configurations.
Ghost in PC DOS mode does not see some partitions and folders that hold .GHO files. In fact, Ghost.exe does not recognize some .GHO files even if it is recognizing the partitions and folders. This usually happens with .GHO files that are not the last one created but not always. In other word, the problem seems to be random. I tried reinstalling Ghost 2003 and updating to build 793 again with no avail. All my .GHO files for four years have always been able to restore system with no issue until now. Never have this problem before until two months ago. All my 50 something Ghost files (non-compress; 5-character name) pass integrity check by computers that behave (mostly older computers).
For example: In one computer, I have drive C, D, & E in one SATA disk. Only C drive has operating system (Windows XP SP3). D contains three folders that hold ghost files of three different creation dates. E contains the same.
When trying to restore C drive using Ghost.exe in PC DOS, E drive is not recognized. In D drive, only one folder of the most current set of Ghost file and span files is present. And that is the one that I do not want to use. Murphy’s law.
This is just one example. It seems to happen more frequently as time goes by. Like a virus.
Please help!! Thanks.

Randy