Mac Mini reboots when connected TV is switeched off

Hi,
I have connected my Mini to my Samsung LCD-TV (LE40R5) via DVI-to-HDMI adapter cable, i.e. I use the HDMI input of the TV. The audio output of the mini goes via optical connection to my audio-decoder station.
When I run FrontRow to listen to music and then turn off the TV with the TV's remote control (because I have selected the correct music-play-list in FrontRow and now just want to hear music without the need of havig the TV running) then about 2 seconds later the mini starts a reboot!
This is reproducable and only happens since I did the last Mac-SW-update (about a week agao, ~middle of april).
FYI:Before the SW-upgrade no reboot happend, but the apple-remote was no more working without running TV. Now the apple-remote works but the mini reboots )-:
Does anyone have the same issue and has a solution for avoiding the reboot???
Any help very much appreciated!

Hi,
Yes the external driv might be an idea.
In the meantime I found out that the problem only appears when I listen music via Front Row. However, if I listen music directly from iTunes then I can switch off the TV and the mini stays awake.
So the reboot problem must be within Front Row.
Does anybody have an idea if Front Row can be configured in any way?
Is there a configuration program for it ?

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Mac Mini reboots when connected TV is switeched off

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