> system httrack -%v%no0p1Br4J80T30R3I0iC1#F2000%L 
urls.txt -
> F <http://pen.physik.uni-kl.de/physlets/> > NUL: failed: 
> 768 
> 
> with urls.txt containing 2000 URLs
> It works when setting #F2001 or otherwise when deleting 
the 

Yes, the scan rule buffer isn't reallocated dynamically - I 
will try to implement a hack for that