PIT 90: msi file is not removed when the user cancels the installation

Tested Bundle : mustang PIT b90 (/net/dig-dug.east/bigtmp/deployment/1.6.0/nightly/2006-06-19)
Tested OS : windows

Steps to reproduce :

1. Install mustang PIT jdk b86
2. Before accepting the license agreement, there is a new welcome screen comes up with cancel button.
3. click on cancel button
4. Confirm the cancellation by clicking yes button
The files *.cab still exist under Sun/Java/jdk1.6.0

5. Install mustang PIT jre b86
6. choose custom option
7. Confirm the cancellation by clicking yes button
In the next screen, click cancel button
The file jre1.6.0.msi still exists under Sun/Java/jre1.6.0

Expected behavior :
Files should be removed when the user cancels the installation