clean install of eclipse with the following plugin zips:

dtp-sdk_1.9.0.zip
eclipse
eclipse-SDK-3.7-linux-gtk-x86_64.tar.gz
emf-transaction-runtime-1.5.0.zip
emf-validation-runtime-1.5.0.zip
emf-xsd-SDK-2.7.0.zip
GEF-SDK-3.7.0.zip
org.eclipse.releng.tools-3.7M7.zip
RSE-SDK-3.3.zip
wtp-sdk-R-3.3.0-20110607160810.zip

Enter the installation, try to make use of our nightly build update site, select "Abridged", the most-of-jbt selection. Try to install. Error / conflicts are as follows:

Cannot complete the install because of a conflicting dependency.
Software being installed: JBoss JAX-RS Tools 1.2.2.v20111201-2131-H636-M5 (org.jboss.tools.ws.jaxrs.feature.feature.group 1.2.2.v20111201-2131-H636-M5)
Software currently installed: Eclipse SDK 3.7.0.I20110613-1736 (org.eclipse.sdk.ide 3.7.0.I20110613-1736)
Only one of the following can be installed at once:
Declarative Services 1.3.1.R37x_v20110701 (org.eclipse.equinox.ds 1.3.1.R37x_v20110701)
Declarative Services 1.3.0.v20110502 (org.eclipse.equinox.ds 1.3.0.v20110502)
Cannot satisfy dependency:
From: Eclipse Platform 3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f (org.eclipse.platform.feature.group 3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f)
To: org.eclipse.rcp.feature.group [3.7.0.v20110216-9DB5Fm1FpBGy_AaVz-mFamgY]
Cannot satisfy dependency:
From: Eclipse RCP 3.7.0.v20110216-9DB5Fm1FpBGy_AaVz-mFamgY (org.eclipse.rcp.feature.group 3.7.0.v20110216-9DB5Fm1FpBGy_AaVz-mFamgY)
To: org.eclipse.equinox.ds [1.3.0.v20110502]
Cannot satisfy dependency:
From: Eclipse Project SDK 3.7.0.v20110426-7Q7xA7DPb31rE2_TcfD-VPkLqq8sfDmLus7XtaSo-7NHB (org.eclipse.sdk.feature.group 3.7.0.v20110426-7Q7xA7DPb31rE2_TcfD-VPkLqq8sfDmLus7XtaSo-7NHB)
To: org.eclipse.platform.feature.group [3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f]
Cannot satisfy dependency:
From: Eclipse SDK 3.7.0.I20110613-1736 (org.eclipse.sdk.ide 3.7.0.I20110613-1736)
To: org.eclipse.sdk.feature.group [3.7.0.v20110426-7Q7xA7DPb31rE2_TcfD-VPkLqq8sfDmLus7XtaSo-7NHB]
Cannot satisfy dependency:
From: JBoss JAX-RS Tools 1.2.2.v20111201-2131-H636-M5 (org.jboss.tools.ws.jaxrs.feature.feature.group 1.2.2.v20111201-2131-H636-M5)
To: org.jboss.tools.ws.jaxrs.ui [1.2.2.v20111201-2131-H636-M5]
Cannot satisfy dependency:
From: JBoss JAX-RS Tooling (UI) 1.2.2.v20111201-2131-H636-M5 (org.jboss.tools.ws.jaxrs.ui 1.2.2.v20111201-2131-H636-M5)
To: bundle org.eclipse.equinox.ds 1.3.1