The following pages of the ICEfaces showcase application show some styling issues on IE browsers:

DataTable - Overview, Grouping, Sortiing, Table Configuration: page content renders bellow the left-side links
DateTimeEntry - all pages: page content renders bellow the left-side links
Dialog - Effects & Size, Modal & Movable: page content renders bellow the left-side links
FileEntry - Overview: page content renders bellow the left-side links
GMap: Layers, Map Markers, Map Options, Overlays - map does not render (greyed out content); js error non-existent as retested in IE8
LinkButton - Overview & PushButton - Overview: render issue
List - MultiList: page content renders below the left-side links
MaskedEntry -all pages: page content renders below the left-side links
Menu - Layout: page content renders below the left-side links
MenuBar - Effects: page content renders below the left-side links
Menu - Layout: page content renders below the left-side links
Printer - Overview: page content renders below the left-side links
ProgressBar - Overview, Push: page content renders below the left-side links
TextEntry - all pages: page content renders below the left-side links
TextAreaEntry - page content renders below the left-side links

After a binary search of revisions, it was found that the problem starts at revision 32182, with an update of the file lib/mojarra/javax.faces.jar (a 2.1.15 snapshot).

The showcase was tested with MyFaces, using the same revision, and the problem does not occur.

The following exception appears in the server console when trying to load any of the pages mentioned above (only happens with Mojarra):

ClientAbortException: java.net.SocketException: Software caused connection abort: socket write error
        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:369)
        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:437)
        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:351)
        at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:392)
        at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:381)
        at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:93)
        at java.nio.channels.Channels$WritableByteChannelImpl.write(Channels.java:296)
        at com.sun.faces.application.resource.ResourceHandlerImpl.handleResourceRequest(ResourceHandlerImpl.java:283)
        at org.icefaces.impl.push.servlet.ICEpushResourceHandler$ICEpushResourceHandlerImpl.handleResourceRequest(ICEpushResourceHandler.java:238)
        at org.icefaces.impl.push.servlet.ICEpushResourceHandler.handleResourceRequest(ICEpushResourceHandler.java:128)
        at org.icefaces.impl.push.DynamicResourceDispatcher.handleResourceRequest(DynamicResourceDispatcher.java:77)
        at org.icefaces.application.ResourceRegistry.handleResourceRequest(ResourceRegistry.java:131)
        at org.icefaces.impl.application.WindowScopeManager.handleSessionAwareResourceRequest(WindowScopeManager.java:69)
        at org.icefaces.impl.application.SessionAwareResourceHandlerWrapper.handleResourceRequest(SessionAwareResourceHandlerWrapper.java:40)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at org.icefaces.impl.application.SessionTimeoutMonitor.handleSessionAwareResourceRequest(SessionTimeoutMonitor.java:71)
        at org.icefaces.impl.application.SessionAwareResourceHandlerWrapper.handleResourceRequest(SessionAwareResourceHandlerWrapper.java:40)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
        at org.icefaces.impl.application.AuxUploadResourceHandler.handleResourceRequest(AuxUploadResourceHandler.java:82)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:591)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:317)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:204)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:311)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.SocketException: Software caused connection abort: socket write error
        at java.net.SocketOutputStream.socketWrite0(Native Method)
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
        at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:218)
        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:437)
        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:351)
        at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:243)
        at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:119)
        at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:190)
        at org.apache.coyote.Response.doWrite(Response.java:533)
        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:364)
        ... 40 more