Random but Regular CF9 503 Error - CF-out.log Jrun errors

Environment

ColdFusion version: CF9 32-bit (NOT the 9.01 Patch yet)
Hotfix version None
server OS : Windows 2003 Server 64 Bit
webserver: Apache/2.2.14 (W32) 32 bit
database: MSSQL 2008 Express with Advanced Services 32 bit

Background

1. Porting an old cold fusion code base from 2002-2006 to CF9

2. I am randomly but quite frequently getting 503 errors in the browser on the above environment AND a development environment running WinXP, Apache 2.2 32 bit, CF9 32 bit, MSSQL 2008 Express with Advanced Services 32 bit.

The 503 errors seem random and they are frequent.

These 503 errors are happening on both the application and on the CFIDE/Administrator (though not as often).

No one is using this application but me. It is under test and development. Obviously, can't go to production with this problem.

3. The 503 errors are showing up in the apache access and error log.

Access Log

70.125.50.86 - - [12/Jan/2011:06:02:55 +0000] "GET /generalsignup.cfm HTTP/1.1" 503 222 "http://www.debitelite.com/index.cfm" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.634.0 Safari/534.16"

Error Log

[Wed Jan 12 06:02:55 2011] [notice] jrApache[34056: 53266] returning error page for JRun too busy or out of memory

4. Here is my JVM config from CF9 CFIDE/Administrator

-server -Dsun.io.useCanonCaches=false -XX:MaxPermSize=192m -XX:+UseParallelGC -Dcoldfusion.rootDir={application.home}/../ -Dcoldfusion.libPath={application.home}/../lib

5. I have NOT made any real modifications or tuning changes to this server. I just installed CF9 tonight.

6. I have run the Code Analyzer and it has not found anything wrong with the code.

7. Here is what ends up in the coldfusion-out.log file.

01/12 06:02:53 error ROOT CAUSE:

java.lang.NullPointerException

at coldfusion.runtime.Cast._double(Cast.java:833)

at coldfusion.runtime.Cast._int(Cast.java:456)

at coldfusion.runtime.Cast._int(Cast.java:461)

at coldfusion.runtime.ClientScope.UpdateGlobals(ClientScope.java:127)

at coldfusion.runtime.ClientScopeServiceImpl.PersistClientVariablesForRequest(ClientScopeSer viceImpl.java:323)

at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:3 3)

at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)

at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46)

at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)

at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)

at coldfusion.filter.CachingFilter.invoke(CachingFilter.java:53)

at coldfusion.CfmServlet.service(CfmServlet.java:200)

at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)

at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)

at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )

at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)

at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)

at jrun.servlet.FilterChain.service(FilterChain.java:101)

at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)

at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)

at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)

at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)

at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)

at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)

at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)

at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)

at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

javax.servlet.ServletException: ROOT CAUSE: