> ==5971== Conditional jump or move depends on uninitialised
> ==5971==    by 0xB73ACA5D: hts_acceptlink 
(htswizard.c:198)

Fixed (true error), thanks !

> ==5971==    at 0xADFDE3F4: getanswer_r (in
> /lib/libnss_dns-2.3.2.so)
> ==5971==    by 0xADFDD0D1: _nss_dns_gethostbyname2_r (in
> /lib/libnss_dns-2.3.2.so)
> ==5971==    by 0xB725513E: gaih_inet (in
> /lib/i686/libc-2.3.2.so)
> ==5971==    by 0xB7256463: __GI_getaddrinfo (in
> /lib/i686/libc-2.3.2.so)
> ==5971==    by 0xB7381DE9: vxgethostbyname (htslib.c:4331)

This one is really weird - can't find any error (maybe a 
false positive?) ; I'll retrace the code to find out what's 
going on.

By the way, valgring is a REALLY great tool - used it many 
times (not recently with httrack however :) ) and always 
managed to find leaks/overflows.