Build 662 under Solaris get log4j warnings.

Anyone know what these messages mean ? Get these when starting intellij build 662 under Solaris.

log4j:WARN Failed to set property to value "1Mb".
java.lang.IllegalArgumentException: object is not an instance of declaring class
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:324)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:196)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:155)
at org.apache.log4j.xml.DOMConfigurator.setParameter(DOMConfigurator.java:530)
at org.apache.log4j.xml.DOMConfigurator.parseAppender(DOMConfigurator.java:182)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:140)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:153)
at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:415)
at org.apache.log4j.xml.DOMConfigurator.parseRoot(DOMConfigurator.java:384)
at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:790)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:673)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:627)
at com.intellij.openapi.diagnostic.Logger.b(Logger.java:45)
at com.intellij.openapi.diagnostic.Logger.getInstance(Logger.java:61)
at com.intellij.ide.g.c.]]>(c.java:59)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:217)
at com.intellij.ide.g.c.c(c.java:42)
at com.intellij.ide.g.c.a(c.java:86)
at com.intellij.idea.Main.main(Main.java:35)
log4j:WARN Failed to set property to value "1".
java.lang.IllegalArgumentException: object is not an instance of declaring class
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:324)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:196)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:155)
at org.apache.log4j.xml.DOMConfigurator.setParameter(DOMConfigurator.java:530)
at org.apache.log4j.xml.DOMConfigurator.parseAppender(DOMConfigurator.java:182)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:140)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:153)
at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:415)
at org.apache.log4j.xml.DOMConfigurator.parseRoot(DOMConfigurator.java:384)
at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:790)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:673)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:627)
at com.intellij.openapi.diagnostic.Logger.b(Logger.java:45)
at com.intellij.openapi.diagnostic.Logger.getInstance(Logger.java:61)
at com.intellij.ide.g.c.]]>(c.java:59)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:217)
at com.intellij.ide.g.c.c(c.java:42)
at com.intellij.ide.g.c.a(c.java:86)
at com.intellij.idea.Main.main(Main.java:35)
log4j:WARN Failed to set property to value "/usr1/people/jrp/.IntellijIdea30/system/log/idea.log".
java.lang.IllegalArgumentException: object is not an instance of declaring class
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:324)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:196)
at org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:155)
at org.apache.log4j.xml.DOMConfigurator.setParameter(DOMConfigurator.java:530)
at org.apache.log4j.xml.DOMConfigurator.parseAppender(DOMConfigurator.java:182)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:140)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:153)
at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:415)
at org.apache.log4j.xml.DOMConfigurator.parseRoot(DOMConfigurator.java:384)
at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:790)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:673)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:627)
at com.intellij.openapi.diagnostic.Logger.b(Logger.java:45)
at com.intellij.openapi.diagnostic.Logger.getInstance(Logger.java:61)
at com.intellij.ide.g.c.]]>(c.java:59)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:217)
at com.intellij.ide.g.c.c(c.java:42)
at com.intellij.ide.g.c.a(c.java:86)
at com.intellij.idea.Main.main(Main.java:35)
log4j:WARN File option not set for appender .
log4j:WARN Are you using FileAppender instead of ConsoleAppender?