I was having a problem with ZASS upgrade to Ver. 8 - after installation the system hung up between boot and login screens.
After some registry corruption issues I reload XP from scratch.
During this time I had no problems with V 8 until I loaded Bootskin from Stardock which changes my boot screen image.
As soon as I ran Bootskin, the problem resurfaced.
As soon as I removed Bootskin and reverted to the original boot screen image the problem went away.
This did not happen with ZASS Ver 7.
I wanted to post this for others to be aware of possible interference with programs that are run
other "skin" programs that could cause the same issue.