Two issues present when installing from the 3.7.0 nightly build update site within Eclipse Indigo M6a:

1) Upon clicking everything in the list of install items (except the one that says "All JBoss Tools 3.2.0"), after everything is downloaded and the installation begins, this error appears:

An error occurred while collecting items to be installed
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: osgi.bundle,org.jboss.tools.esb.core,1.5.0.v20110504-0713-H212-M1
No repository found containing: org.eclipse.update.feature,org.jboss.tools.esb.feature,1.3.0.v20110504-0713-H212-M1
No repository found containing: osgi.bundle,org.jboss.tools.esb.project.core,1.4.0.v20110504-0713-H212-M1
No repository found containing: osgi.bundle,org.jboss.tools.esb.project.ui,1.4.0.v20110504-0713-H212-M1
No repository found containing: osgi.bundle,org.jboss.tools.esb.ui,1.4.0.v20110504-0713-H212-M1
No repository found containing: osgi.bundle,org.jboss.tools.esb.validator,1.4.0.v20110504-0713-H212-M1

2)Upon skipping components that the above files relate to, installation completes and Eclipse is restarted. Upon re-launching Eclipse the following error is displayed before a workspace location is asked for:

An error has occurred. See the log file
/home/irooskov/Work/JBT/eclipse/configuration/<random_long_number_string>.log.

Within the generated log file, the following can be found:

!ENTRY org.eclipse.equinox.registry 4 0 2011-05-05 08:27:17.902
!MESSAGE Unable to create output stream for registry cache.
!STACK 0
java.io.FileNotFoundException: /home/irooskov/Work/JBT/eclipse/configuration/org.eclipse.core.runtime/.extraData3426067224546608204.new (Too many open files)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
at org.eclipse.core.internal.registry.TableWriter.openFiles(TableWriter.java:96)
at org.eclipse.core.internal.registry.TableWriter.saveCache(TableWriter.java:78)
at org.eclipse.core.internal.registry.ExtensionRegistry.stop(ExtensionRegistry.java:802)
at org.eclipse.core.internal.registry.osgi.Activator.stopRegistry(Activator.java:151)
at org.eclipse.core.internal.registry.osgi.Activator.stop(Activator.java:66)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:565)
at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1160)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:595)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:690)
at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:597)
at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:390)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)