FULL PRODUCT VERSION :
java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows 7 pro (6.1.7600)

A DESCRIPTION OF THE PROBLEM :
If you work under a limited user, exactly how you should, java updater will always fail, even if you elevate it or run it as administrator.

The process monitor shows two interesting lines:

----1----

jucheck.exe 796 CreateFile C:\Program Files (x86)\Common Files\Java\Java Update\http:\javadl.sun.com\webapps\download\GetFile\1.6.0_24-b71\windows-i586\jre-6u24-windows-i586-iftw-rv.exe NAME INVALID Desired Access: Read Attributes, Delete, Disposition: Open, Options: Non-Directory File, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a

--- 2 ---
1:28:05,6955237 jucheck.exe 796 CreateFile C:\Users\Administrator\AppData\Local\Temp\jre-6u24-windows-i586-iftw-rv.exe NAME NOT FOUND Desired Access: Read Attributes, Delete, Disposition: Open, Options: Non-Directory File, Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Work under limiter user.
Run updater (jucheck.exe)

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Java should update
ACTUAL -
but it doesn't

ERROR MESSAGES/STACK TRACES THAT OCCUR :
The error message is:
---------------------------
Error - Java(TM) Update
---------------------------
Failed to download required installation files.
---------------------------
OK
---------------------------

REPRODUCIBILITY :
This bug can be reproduced always.