> #4  0xff2c1a50 in url_savename (adr_complete=0xffb958b0

Okay - httrack is building the URL local name, and needs to 
process a request to get the remote file (HEAD request). 

httrack seems to be waiting back_wait() :
..
if (back[b].status>0) {
  back_wait(back,back_max,opt,cache,0);        
}

Can you try to go up to the stack level of htsname.c 
(using "up" and "down"), and then do a "next" to see if the 
back_wait() returns ? (the "next" should quickly finish 
back_wait() and gdb should then have the console control 
again)

Can you mail me the details, such as URLs and options? I 
will trace this problem on the debugger directly, hoping 
that it will occurs. (did you test it on Linux, or Solaris?)