I just installed Apex DC++ ver. 1.3.3 over an older version (not fresh install). 
I started the program and started hashing files. 
After a few minutes I got a BSOD from windows with the following parameters 
 
Tipo evento:	Errore 
Origine evento:	System Error 
Categoria evento:	(102) 
ID evento:	1003 
Data:		26/06/2010 
Ora:		11.30.30 
Utente:		N/D 
Computer:	FABIO-B4D4735DB 
Descrizione: 
Codice errore 1000008e, parametro1 c0000005, parametro2 bf807bd3, parametro3 9977a208, parametro4 00000000. 
 
Parameters 2 and 3 can change (parametro2 bf836196, parametro3 96c34b8c) 
 
Microsoft explains that this is a device driver error, but I am pretty sure it is caused by Apex because I could reproduce it (started Apex a few times and every time got the same BSOD) 
 
Thanks for looking into the matter