Memory issues for wsdl

Hi

Getting alot of memory issues in Soapui pro 4.5.1. Suites work fine but after a while soapui slows down and become unresponsive.
Seems to be related to loading wsdl definitions? The wsdl files are generated by Rational Software Architect and should not contain any errors. I belive that the soap version is 1.1


Logs look like this:
2012-08-17 10:46:47,944 ERROR [errorlog] com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:138)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:535)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:524)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionCache.update(AbstractDefinitionCache.java:97)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext$Loader.construct(AbstractDefinitionContext.java:236)
at com.eviware.soapui.support.swing.SwingWorkerDelegator.construct(SwingWorkerDelegator.java:46)
at com.eviware.soapui.support.swing.SwingWorker$2.run(SwingWorker.java:149)
at java.lang.Thread.run(Unknown Source)
2012-08-17 10:46:49,969 ERROR [errorlog] com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:138)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:535)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:524)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionCache.update(AbstractDefinitionCache.java:97)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext$Loader.construct(AbstractDefinitionContext.java:236)
at com.eviware.soapui.support.swing.SwingWorkerDelegator.construct(SwingWorkerDelegator.java:46)
at com.eviware.soapui.support.swing.SwingWorker$2.run(SwingWorker.java:149)
at java.lang.Thread.run(Unknown Source)
2012-08-17 10:46:51,008 ERROR [errorlog] com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:138)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:535)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:524)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionCache.update(AbstractDefinitionCache.java:97)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext$Loader.construct(AbstractDefinitionContext.java:236)
at com.eviware.soapui.support.swing.SwingWorkerDelegator.construct(SwingWorkerDelegator.java:46)
at com.eviware.soapui.support.swing.SwingWorker$2.run(SwingWorker.java:149)
at java.lang.Thread.run(Unknown Source)
2012-08-17 10:46:51,112 ERROR [errorlog] com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:138)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:535)
at com.eviware.soapui.impl.wsdl.support.xsd.SchemaUtils.getDefinitionParts(SchemaUtils.java:524)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionCache.update(AbstractDefinitionCache.java:97)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext$Loader.construct(AbstractDefinitionContext.java:236)
at com.eviware.soapui.support.swing.SwingWorkerDelegator.construct(SwingWorkerDelegator.java:46)
at com.eviware.soapui.support.swing.SwingWorker$2.run(SwingWorker.java:149)
at java.lang.Thread.run(Unknown Source)
2012-08-17 12:46:00,147 ERROR [errorlog] java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
at org.apache.xmlbeans.impl.store.CharUtil.allocate(CharUtil.java:397)
at org.apache.xmlbeans.impl.store.CharUtil.saveChars(CharUtil.java:506)
at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.text(Cur.java:2925)
at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.attr(Cur.java:3046)
at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.attr(Cur.java:3063)
at org.apache.xmlbeans.impl.store.Locale$SaxHandler.startElement(Locale.java:3259)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.reportStartTag(Piccolo.java:1082)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseAttributesNS(PiccoloLexer.java:1802)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseOpenTagNS(PiccoloLexer.java:1521)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseTagNS(PiccoloLexer.java:1362)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseXMLNS(PiccoloLexer.java:1293)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseXML(PiccoloLexer.java:1261)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.yylex(PiccoloLexer.java:4808)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yylex(Piccolo.java:1290)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yyparse(Piccolo.java:1400)
at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.parse(Piccolo.java:714)
at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3454)
at org.apache.xmlbeans.impl.store.Locale.parse(Locale.java:712)
at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:696)
at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:683)
at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:208)
at org.apache.xmlbeans.XmlObject$Factory.parse(XmlObject.java:633)
at com.eviware.soapui.support.xml.XmlUtils.createXmlObject(XmlUtils.java:217)
at com.eviware.soapui.impl.support.definition.support.InterfaceCacheDefinitionLoader.getPartContent(InterfaceCacheDefinitionLoader.java:104)
at com.eviware.soapui.impl.support.definition.support.InterfaceCacheDefinitionLoader.loadXmlObject(InterfaceCacheDefinitionLoader.java:64)
at com.eviware.soapui.impl.support.definition.support.InterfaceCacheDefinitionLoader.load(InterfaceCacheDefinitionLoader.java:47)
at com.eviware.soapui.impl.wsdl.support.wsdl.AbstractWsdlDefinitionLoader.getBaseInputSource(AbstractWsdlDefinitionLoader.java:87)
at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlInterfaceDefinition.load(WsdlInterfaceDefinition.java:52)
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlContext.loadDefinition(WsdlContext.java:66)
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlContext.loadDefinition(WsdlContext.java:30)
at com.eviware.soapui.impl.support.definition.support.AbstractDefinitionContext.cacheDefinition(AbstractDefinitionContext.java:278)
2012-08-17 12:46:01,812 ERROR [errorlog] java.lang.Exception: java.lang.OutOfMemoryError: Java heap space