On build 28, ATG app failed on 64 bit amd platforms, including sol10 amd, linux amd, and windows amd.
The failure is ONLY with 64 bits jvm.

One of the machines' info:
Hostname: jtg-sunfire-1
# uname -a
SunOS jtg-sunfire-1 5.10 Generic i86pc i386 i86pc
# isainfo -v
64-bit amd64 applications
        sse2 sse fxsr amd_3dnowx amd_3dnow amd_mmx mmx cmov amd_sysc cx8 tsc
        fpu
32-bit i386 applications
        sse2 sse fxsr amd_3dnowx amd_3dnow amd_mmx mmx cmov amd_sysc cx8 tsc
        fpu
# /usr/j2se/bin/java -d64 -version
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b28)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-ea-b28, mixed mode)

If b28's libjvm.so is replaced with b27's libjvm.so, the problem went away.
It's broken in RE's 03-17's build. 03-16's build works. ( I am talking about builds from /net/mizu.sfbay/usr/re/jdk6.0/bundles/ )

What happened to ATG is that the license validation module of is broken.
Here is the error message:
**** Error Thu Mar 17 10:26:37 PST 2005 1111083997826 /
Validation of service: /DASLicense
failed:atg.nucleus.ValidationException: Invalid license file - property
values do not match the signature: You are not licensed to use Dynamo.
Please contact ###@###.### to obtain a valid license.

###@###.### 2005-03-17 21:01:01 GMT
###@###.### 2005-03-17 21:06:07 GMT

###@###.### 2005-03-18 01:39:56 GMT