uDIG does not open geowebcache- wms-c urls

!ENTRY net.refractions.udig.catalog.internal.wms 4 0 2010-07-27 07:07:11.027
!MESSAGE WMSC GetCapabilities: http://linux:8080/geoserver/gwc/service/wms?REQUEST=GetCapabilities&SERVICE=WMS

!ENTRY net.refractions.udig.catalog.internal.wms 4 0 2010-07-27 07:07:11.105
!MESSAGE Cannot convert string to url:
!STACK 0
java.net.MalformedURLException: no protocol:
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at net.refractions.udig.catalog.wmsc.server.WMSCComplexTypes$_ServiceType.getValue(WMSCComplexTypes.java:739)
at org.geotools.xml.handlers.ComplexElementHandler.endElement(ComplexElementHandler.java:186)
at org.geotools.xml.XMLSAXHandler.endElement(XMLSAXHandler.java:266)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.impl.dtd.XMLNSDTDValidator.endNamespaceScope(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at org.geotools.xml.DocumentFactory.getInstance(DocumentFactory.java:140)
at net.refractions.udig.catalog.wmsc.server.WMSCCapabilitiesResponse.<init>(WMSCCapabilitiesResponse.java:70)
at net.refractions.udig.catalog.wmsc.server.TiledWebMapServer$CapabilitiesRequest.createResponse(TiledWebMapServer.java:247)
at net.refractions.udig.catalog.wmsc.server.TiledWebMapServer.issueRequest(TiledWebMapServer.java:315)
at net.refractions.udig.catalog.wmsc.server.TiledWebMapServer.readCapabilities(TiledWebMapServer.java:174)
at net.refractions.udig.catalog.wmsc.server.TiledWebMapServer.getCapabilities(TiledWebMapServer.java:139)
at net.refractions.udig.catalog.wmsc.server.TiledWebMapServer.getCapabilitiesXml(TiledWebMapServer.java:216)
at net.refractions.udig.catalog.internal.wmsc.WMSCServiceImpl.getWMSC(WMSCServiceImpl.java:204)