[sPlOrYgOn]

YAYA!
It's fixed !
here's the new code:

bool BotFindBreakable (bot_t *pBot)
{
   // Checks if Bot is blocked by a Shootable Breakable in his moving direction

   TraceResult tr;
   edict_t *pEdict = pBot->pEdict;

   Vector v_src = pEdict->v.origin;
   Vector vecDirection = (VecBModelOrigin (pBot->pShootBreakable) - v_src).Normalize ();
   Vector v_dest = v_src + vecDirection * 50;

   TRACE_LINE (v_src, v_dest, dont_ignore_monsters, pEdict, &tr);
   if ((tr.flFraction != 1.0)
       && (FStrEq ("func_breakable", STRING (tr.pHit->v.classname))
       || FStrEq ("func_pushable", STRING (tr.pHit->v.classname)))
       && IsShootableBreakable (tr.pHit))
   {
      pBot->vecBreakable = tr.vecEndPos;
      return (TRUE);
   }

   v_src = GetGunPosition (pEdict);
   vecDirection = (VecBModelOrigin (pBot->pShootBreakable) - v_src).Normalize ();
   v_dest = v_src + vecDirection * 50;

   TRACE_LINE (v_src, v_dest, dont_ignore_monsters, pEdict, &tr);
   if ((tr.flFraction != 1.0)
       && (FStrEq ("func_breakable", STRING (tr.pHit->v.classname))
       || FStrEq ("func_pushable", STRING (tr.pHit->v.classname)))
       && IsShootableBreakable (tr.pHit))
   {
      pBot->vecBreakable = tr.vecEndPos;
      return (TRUE);
   }

   pBot->pShootBreakable = NULL;
   pBot->vecBreakable = g_vecZero;
   return (FALSE);
}

I changed it from pShootBreakable->v.origin to VecBModelOrigin (pBot->pShootBreakable)
I don't know why v.origin is g_vecZero though.. seems strange..

[edit]
new dll can be found here http://www.mapzap.org/files/podbot/podbotBETA.zip
[/edit]