ETW. CloseTrace does not close a handle. Is it a bug   

I am using Event Trace Window(e.i. ETW) on Windows 2003 to process events in 
real time mode. When an event provider is not running, the function 
ProcessTrace returns the error code 0x1069, which means “The instance name 
passed was not recognized as valid by a WMI data provider”.  
Subsequent call to CloseTrace returns the error code 0xaa, which is “The 
requested resource is in use”, and the handle lefts open. If I ignore this 
error and try to call OpenTrace again, the number of process handles is 
constantly growing. 

Snip of my code:

OpenTrace
while (!End){
    rc  = ProcessTrace
    if (rc) {
        CloseTrace
        OpenTrace
    }
}
CloseTrace

Any suggestions are greatly appreciated

date: Tue, 10 Jun 2008 20:44:00 -0700   author:   Volodymyr Tarasevych Volodymyr