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UPnP devices may not be displayed in the "My Network Places" folder after you restart a Windows XP-based computer
The Internet Gateway Device Discovery and Control Client

To display UPnP devices in the "My Network Places" folder user interface, the SSDP Discovery Service service must run within 30 seconds after the start command is sent to the SSDP Discovery Service service. Depending on the software computer configuration and the hardware computer configuration, the SSDP Discovery Service service may take longer than the expected 30 seconds to start.

Zato, onemogućavanje iste i nije najprihvatljivije rješenje.
A ovo

Depending on the software computer configuration and the hardware computer configuration

je, čini se, razlog i za tray koji se ne stigne dovoljno brzo učitat…