> Hmm... corresponding fix was intorduced in FB 2.1.0 and was never backported into 2.0.x series.
>

http://firebird.cvs.sourceforge.net/firebird/firebird2/src/jrd/isc_sync.cpp?r1=1.103.2.1&r2=1.103.2.2

And what with fact, that in Vista SP1 I can not use XNET without modifying firebird.conf ? Is it expected ?

Second interesting fact is that, when I add IpcName=Global\FIREBIRD in firebird.conf on PC with Win98SE (as server running FB 2.0.5). I can SUCCESSFULY connect using XNET ... This contradict to comment in utils.cpp :
// hvlad: begins from Windows 2000 we can safely add 'Global\' prefix for
// names of all kernel objects we use. For Win9x we must not add this prefix.

TIA
-Laco.