Firefox 3.0 crashes with Deployment Toolkit (npdeploytk.dll) on UAC enabled Vista box.
This is not a regression. Firefox 3.0 is released recently.

How to reproduce:
Install FF3.0 (if not there)
Install JRE (b27 PIT)
Un-instll JRE and Make sure that npdeploytk.dll exists in C:\Program Files\Mozilla Firefox\plugins directory. (b527 version)
Load this page : (or any page which use deployment toolkit java script)
http://sqindia.india.sun.com/disk17/deployment/raghu/kernel/KJRE001/installJRE.html

This is reproducible with all m/cs with UAC enabled.
Here are some SCA m/cs. Use remote desktop.
1) amd-64 (10.5.26.149)
user: tester
passw: dtf_test
2) dnm-dtf-015 (10.5.26.56) Vista is default one (you can reboot it) - do not uninstall any microsoft software from this machine
user: tester
passw: dtf_test