TestTimerAAAAA ... Uncaught exception

I'm trying to compile the DotGNU packages on a Solaris 2.8 (Sun Sparc) 
system.  The compile goes fine for treecc-0.3.2 and pnet-0.6.8, but fails 
on pnetlib-0.6.8, as follows:

TestTimerAAAAA ... Uncaught exception: System.NotImplementedException: The 
requested functionality is not implemented
         at System.Threading.Timer..ctor(TimerCallback, Object) in 
./System/Threading/Timer.cs:68
         at System.Threading.Timer..ctor(TimerCallback, Object, Int32, Int32)
         at TestTimer.Setup() in ./System/Threading/TestTimer.cs:43
         at CSUnit.TestCase.Run(TestResult) in ./TestCase.cs:44
         at CSUnit.TestSuite.Run(TestResult) in ./TestSuite.cs:103
         at CSUnit.TestSuite.Run(TestResult) in ./TestSuite.cs:103
         at CSUnit.TestMain.Main(String[]) in ./TestMain.cs:247

FAIL: Testruntime.dll


I'm at a loss as to how to proceed.  Any suggestions would be 
appreciated.  Thanks in advance for your help.