Regression (?) Problem which caused default printer changes not to be recognized by the Notes client

Fixes for release 5.0.10Printing HYAI4LR8WS SPR# HYAI4LR8WS - Fixed a problem which caused default printer changes not to be recognized by the Notes client. This regression was introduced in 5.0.

Does anyone know if this problem has reappeared in Notes 6?

I have a script library which changes the default windows printer (this way i can print to a PDF printer driver). The script works in 5.0.13 (!) but fails in 6.5.1 and 6.5.2.

Addition:

Important; if the computer is NOT connected to the network/domain; it also works in Notes 6!!!