I'd liked to use TightSVN to remotely work on the desktop machine. Thank you M$ for not supporting TightSVN on your genius Vista (my personal code name for this smart peace of software is Fista!). S I am forced again to use smart software from Redmond: Remote Desktop with following results if using it after some minutes:
First issue is solved. Second issue is still a major problem! The problem in this case seems to be on the XP side.