Opening file - warning appears

[jantar.cz]

Hello.
I have just installed TC v6.54a on my new computer with Win XP SP2.
If I try to open file like .mp3 or .exe FROM NETWORK SHARE, Windows dialog with "open file - security warning" with open/cancel appears. (basic translation from czech language)

I have spent over an hour searching how to disable that, it will be probably related with some security settings in SP2 (old computer with SP1 is OK), but makes me really insane.
Should someone help, please?
Notice: this does not happen when i try to open file from Windows "Explorer"

[sorex]

any antivirus software on it that's checking network connections ?

I doubt it's caused by TC itself.

[jantar.cz]

No antivirus, it is something from Windows, probably not caused by TC, but in close relation with try to access something from another program.

[Flint]

jantar.cz
Is this confirmation dialog really absent when you open the same file from Explorer? The thing is that Windows can save in NTFS the information that the file was downloaded from the Internet (for example) and hence running it may be risky. But in this case it should display the dialog both from TC and Explorer...

[jantar.cz]

Solved by registry settings from here: http://www.neowin.net/forum/index.php?showtopic=307102
Thx god.