Baron - 2008-02-09

Using Leopard 10.5.1, I get the following in my syslog any time I attempt to access the device /dev/tty.PL2303-003041FD ...  I see folks saying the driver works fine in Leopard, but so far, not for me. Is there a trick I'm missing? I have installed the latest one from here on sourceforge, 0.3.1... 

Feb  9 16:28:09 metropolis kernel[0]: nl_bjaelectronics_driver_PL2303(0x76f7a00)::dequeueDataGated - INTERRUPTED

Any suggestions on how to fix this?

Full Speed device @ 8 (0xFD413000): .............................................   Composite device: "USB-Serial Controller D"
    Device Descriptor  
        Descriptor Version Number:   0x0110
        Device Class:   0   (Composite)
        Device Subclass:   0
        Device Protocol:   0
        Device MaxPacketSize:   64
        Device VendorID/ProductID:   0x0557/0x2008   (ATEN International Co. Ltd.)
        Device Version Number:   0x0300
        Number of Configurations:   1
        Manufacturer String:   1 "Prolific Technology Inc. "
        Product String:   2 "USB-Serial Controller D"
        Serial Number String:   0 (none)
    Configuration Descriptor  
        Length (and contents):   39
        Number of Interfaces:   1
        Configuration Value:   1
        Attributes:   0xA0 (bus-powered, remote wakeup)
        MaxPower:   100 ma
        Interface #0 - Vendor-specific  
            Alternate Setting   0
            Number of Endpoints   3
            Interface Class:   255   (Vendor-specific)
            Interface Subclass;   0   (Vendor-specific)
            Interface Protocol:   0
            Endpoint 0x81 - Interrupt Input  
                Address:   0x81  (IN)
                Attributes:   0x03  (Interrupt no synchronization data endpoint)
                Max Packet Size:   10
                Polling Interval:   1 ms
            Endpoint 0x02 - Bulk Output  
                Address:   0x02  (OUT)
                Attributes:   0x02  (Bulk no synchronization data endpoint)
                Max Packet Size:   64
                Polling Interval:   0 ms
            Endpoint 0x83 - Bulk Input  
                Address:   0x83  (IN)
                Attributes:   0x02  (Bulk no synchronization data endpoint)
                Max Packet Size:   64
                Polling Interval:   0 ms