There are following diffs between the the with-auth distro and the zipped sources:

seam/build.xml
1342c1342
< <replacetoken><![CDATA[${name}-${TODAY}]]></replacetoken>
—
> <replacetoken><![CDATA[${name}-${version}.${patchlevel}]]></replacetoken>
+++++++++++++++++++++++++++++++++++++++++++++
server/

/deploy/jboss-web.deployer/conf/web.xml
31c31
< <param-value>Servlet 2.4; JBoss-4.3.0.GA (build: SVNTag=JBPAPP_4_3_0_GA date=200710252032)/Tomcat-5.5</param-value>
—
> <param-value>Servlet 2.4; JBoss-4.3.0.GA_CP01 (build: SVNTag=JBoss_4_3_0_GA_CP01 date=200710301352)/Tomcat-5.5</param-value>

The SVN tag differs also in some MANIFEST.MF files
+++++++++++++++++++++++++++++++++++++++++++++

Only in the zip distro:

jboss-as: copyright.txt
jboss-as/docs: licenses
jboss-as: jar-versions.xml
jboss-as: JBossORG-EULA.txt
jboss-as: lgpl.html
jboss-as: readme.html
+++++++++++++++++++++++++++++++++++++++++++++

Only in the zipped sources:

seam: build
seam: dist
seam: doc
seam/drools: readme.txt
seam/embedded-ejb: readme.txt
seam/examples/blog: .cvsignore
seam/examples/blog: readme.txt
seam/examples/booking: alter.config
seam/examples/booking: build.alter.xml
seam/examples/booking: .cvsignore
seam/examples/booking: readme.txt
seam/examples/contactlist: .cvsignore
seam/examples/contactlist: readme.txt
seam/examples/drools: .cvsignore
seam/examples/drools: readme.txt
seam/examples/dvdstore: .cvsignore
seam/examples/dvdstore: readme.txt
seam/examples/glassfish: readme.txt
seam/examples/hibernate: .cvsignore
seam/examples/hibernate: readme.txt
seam/examples/hibernate2: .cvsignore
seam/examples/hibernate2: readme.txt
seam/examples/icefaces: readme.txt
seam/examples/issues: .cvsignore
seam/examples/issues: readme.txt
seam/examples/jpa: readme.txt
seam/examples/messages: .cvsignore
seam/examples/messages: readme.txt
seam/examples/numberguess: .cvsignore
seam/examples/numberguess: readme.txt
seam/examples/portal: .cvsignore
seam/examples/portal: readme.txt
seam/examples: readme.txt
seam/examples/registration: .cvsignore
seam/examples/registration: readme.txt
seam/examples/remoting: poker
seam/examples: seambay
seam/examples: takeaway
seam/examples/todo: .cvsignore
seam/examples/todo: readme.txt
seam/examples: wiki
seam: extras
seam/hibernate: readme.txt
seam/lib: readme.txt
seam/microcontainer: readme.txt
seam: readme.txt
seam: release-process.txt
seam: seam-ui-cdk
seam/src/ioc/META-INF: spring.handlers
seam/src/ioc/META-INF: spring.schemas
seam/src/main/org/jboss/seam/text: SeamTextLexer.smap
seam/src/main/org/jboss/seam/text: SeamTextParser.smap
seam/src/main/org/jboss/seam/text: SeamTextParserTokenTypes.txt
seam/src/test: jsUnit
seam/src/test/misc/org/jboss/seam/test: SeamTextTest.txt