Hi, I found the following problems when I run examples programs in the libs/graph/examples (I run and tested the running all example program.): In few cases I didn't find problem just the program run many time (more than 1 minutes, maybe problem..) therefore I also reported. g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 boost_web_graph.cpp 2 [thorin] {...libs/graph/example:1812} a.out /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0/boost/graph/detail/adjacency_list.hpp:843: failed assertion `u != v' Abort (core dumped) Exit 134 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 dag_shortest_paths.cpp 2 [thorin] {...libs/graph/example:1837} a.out 0: 2147483647 1: 0 2: 2 3: 6 4: 5 5: 3 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 dave.cpp 2 [thorin] {...libs/graph/example:1840} a.out a --> c d b --> a d c --> f d --> c e f e --> b g f --> e g g --> Starting graph: a 2147483647 (a,c) (a,d) c 2147483647 (c,f) d 2147483647 (d,c) (d,e) (d,f) f 2147483647 (f,e) (f,g) e 2147483647 (e,b) (e,g) g 2147483647 b 2147483647 (b,a) (b,d) infinite loop.............. ^CSegmentation fault (core dumped) Exit 139 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 dijkstra-example.cpp infinite loop... ^CSegmentation fault (core dumped) Exit 139 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 edge-function.cpp edge-function.cpp:137: failed assertion `exists == true' Abort (core dumped) Exit 134 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 edmunds-karp-eg.cpp a.out (many time run.) g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 johnson-eg.cpp a.out Segmentation fault Exit 139 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 max_flow.cpp a.out ^C ^C (many time run) g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 min_max_paths.cpp a.out Segmentation fault Exit 139 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 minimum_degree_ordering.cpp /tmp/ccuZOrPG.o: In function `harwell_boeing::harwell_boeing(char *)': /tmp/ccuZOrPG.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x3d): undefined reference to `readHB_info' /tmp/ccuZOrPG.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x71): undefined reference to `IOHBTerminate' /tmp/ccuZOrPG.o(.harwell_boeing::gnu.linkonce.t.(char *)+0xa6): undefined reference to `IOHBTerminate' /tmp/ccuZOrPG.o(.harwell_boeing::gnu.linkonce.t.(char *)+0xe5): undefined reference to `IOHBTerminate' /tmp/ccuZOrPG.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x126): undefined reference to `IOHBTerminate' /tmp/ccuZOrPG.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x13b): undefined reference to `readHB_mat_double' collect2: ld returned 1 exit status Exit 1 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 minimum_degree_ordering.cpp /tmp/ccSQnK6n.o: In function `harwell_boeing::harwell_boeing(char *)': /tmp/ccSQnK6n.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x3d): undefined reference to `readHB_info' /tmp/ccSQnK6n.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x71): undefined reference to `IOHBTerminate' /tmp/ccSQnK6n.o(.harwell_boeing::gnu.linkonce.t.(char *)+0xa6): undefined reference to `IOHBTerminate' /tmp/ccSQnK6n.o(.harwell_boeing::gnu.linkonce.t.(char *)+0xe5): undefined reference to `IOHBTerminate' /tmp/ccSQnK6n.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x126): undefined reference to `IOHBTerminate' /tmp/ccSQnK6n.o(.harwell_boeing::gnu.linkonce.t.(char *)+0x13b): undefined reference to `readHB_mat_double' collect2: ld returned 1 exit status Exit 1 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 prim-example.cpp a.out /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0/boost/graph/detail/adjacency_list.hpp:843: failed assertion `u != v' Abort (core dumped) Exit 134 g++ -ftemplate-depth-30 -I /net/cooler/vol/export/proteome/murvai/CC/BOOST/boost_1_26_0 push-relabel-eg.cpp a.out ^C (many time run) Janos