Hi,
this Mantis thingy's not working (didn't get the e-mail with password - yes, I chcecked the spam), so I'm posting in here.
Version is the latest in the CVS tree, compiled by myself with GCC 4.2.3
It's been been broken for quite some time now, and that's why I'm posting it here
it crashes every time when something is about to jump out of a Knossos portal.
Here's what gdb says: 
(gdb) bt full
#0  position_ship_for_knossos_warpin (p_objp=0xb44c2640) at mission/missionparse.cpp:2695
        so = (ship_obj *) 0x95b7d40
        objp = (object *) 0x908ddc0
        new_point = {{xyz = {x = -1.02482605, y = 4.58924162e-33, z = -1.02486944}, a1d = {-1.02482605, 4.58924162e-33, -1.02486944}}}
        pm = (polymodel *) 0xc1d39e0
        dist = <value optimized out>
#1  0x081b6007 in parse_create_object_sub (p_objp=0xb44c2640) at mission/missionparse.cpp:2891
        sexp = <value optimized out>
        i = <value optimized out>
        j = <value optimized out>
        k = <value optimized out>
        objnum = 472
        shipnum = 9
        aip = <value optimized out>
        ptr = <value optimized out>
        shipp = (ship *) 0x91a3f78
        sssp = <value optimized out>
        texture_file = "\035\000\000\000\037���\000\200\000\000\000\200\000\000\000\200\000\000\037��������\000\000"
        pm = <value optimized out>
#2  0x081b963e in parse_create_object (pobjp=0xb44c2640) at mission/missionparse.cpp:2837
        dfi = {early_return_condition = 88, parameter_variables = {int_value = 152388456, objp_value = 0x0}, maintained_variables = {
    int_value = -1081921656, objp_value = 0xb44c2640}}
        objp = <value optimized out>
#3  0x081b9758 in mission_did_ship_arrive (objp=0xb44c2640) at mission/missionparse.cpp:7205
        object_num = -1
        should_arrive = <value optimized out>
#4  0x081b9872 in mission_maybe_make_ship_arrive (p_objp=0xb44c2640) at mission/missionparse.cpp:7237
        objnum = <value optimized out>
#5  0x081ba31f in mission_eval_arrivals () at mission/missionparse.cpp:7371
        rship = <value optimized out>
        i = 5
        rship = <value optimized out>
#6  0x081ba6bb in mission_parse_eval_stuff () at mission/missionparse.cpp:7737
No locals.
#7  0x080550ff in game_simulation_frame () at freespace2/freespace.cpp:5954
        moveup = (ship_obj *) 0x0
#8  0x0805a315 in game_frame (paused=0) at freespace2/freespace.cpp:6353
        actually_playing = 1
        eye_pos = {{xyz = {x = 1.68155816e-44, y = -1.02577507, z = -1.02490902}, a1d = {1.68155816e-44, -1.02577507, -1.02490902}}}
        eye_orient = {{vec = {rvec = {{xyz = {x = 4.98609944e-34, y = 0, z = 2.80259693e-45}, a1d = {4.98609944e-34, 0, 2.80259693e-45}}},
      uvec = {{xyz = {x = -1.0249052, y = 4.02211463e-34, z = 0.0160064697}, a1d = {-1.0249052, 4.02211463e-34, 0.0160064697}}}, fvec = {{
          xyz = {x = -1.02490807, y = -1.02491093, z = 2.80259693e-45}, a1d = {-1.02490807, -1.02491093, 2.80259693e-45}}}}, a2d = {{
        4.98609944e-34, 0, 2.80259693e-45}, {-1.0249052, 4.02211463e-34, 0.0160064697}, {-1.02490807, -1.02491093, 2.80259693e-45}}, a1d = {
      4.98609944e-34, 0, 2.80259693e-45, -1.0249052, 4.02211463e-34, 0.0160064697, -1.02490807, -1.02491093, 2.80259693e-45}}}
#9  0x0805a763 in game_do_frame () at freespace2/freespace.cpp:6794
No locals.
#10 0x080c8a96 in gameseq_process_events () at gamesequence/gamesequence.cpp:662
        event = <value optimized out>
        old_state = <value optimized out>
#11 0x0805645e in game_main (cmdline=0x991f9c0 "-spec") at freespace2/freespace.cpp:9141
        state = <value optimized out>
#12 0x080568ed in main (argc=12, argv=0xbf833244) at freespace2/freespace.cpp:9282
        result = <value optimized out>
        i = 12
        len = <value optimized out>
        userdir = "/home/piotrek/.fs2_open/\000\000\000\020\002\000\000@\000\000\000\000\000\000\000�)շ\200�o\b\0241\203�\234�o\b(1\203� \002\000\000I�\001\000\200�o\b\0241\203�\234�o\b(1\203�R\232\024\b\214�o\b��з@\001ѷ��\221\t��\221\td�·��\221\t\000\000\000\000\f\002\000\000Y�\001\000��\221\t��з\037\000\000\000��\221ff\000\000\000C\000\000\000E\000\000\000\232\000\000\000X1\203�<�\v\b�z?\b�U?\b��[\b<����<���\\H\bx1\203�\222�\004\b\230"...
I tried to run the debug build, but the compilation crashed with --enable-debug
I hope this helped, feel free to ask for more info.