$ strace -T -v -tt xfce4-appfinder 2> appfinder_strace.txt [... cut ...] 17:00:39.775461 rt_sigaction(SIGINT, {0x7f19a493fca0, [INT], SA_RESTORER|SA_RESTART, 0x7f19a20ec0b0}, {SIG_DFL, [], 0}, 8) = 0 <0.000030> 17:00:39.775618 rt_sigaction(SIGQUIT, {0x7f19a493fca0, [QUIT], SA_RESTORER|SA_RESTART, 0x7f19a20ec0b0}, {SIG_DFL, [], 0}, 8) = 0 <0.000024> 17:00:39.775757 rt_sigaction(SIGTERM, {0x7f19a493fca0, [TERM], SA_RESTORER|SA_RESTART, 0x7f19a20ec0b0}, {SIG_DFL, [], 0}, 8) = 0 <0.000025> 17:00:39.775898 rt_sigaction(SIGABRT, {0x7f19a493fca0, [ABRT], SA_RESTORER|SA_RESTART, 0x7f19a20ec0b0}, {SIG_DFL, [], 0}, 8) = 0 <0.000024> 17:00:39.776067 getresuid([1000], [1000], [1000]) = 0 <0.000025> 17:00:39.776180 getresgid([1000], [1000], [1000]) = 0 <0.000027> 17:00:39.776389 socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC, 0) = 5 <0.000038> 17:00:39.776516 connect(5, {sa_family=AF_FILE, path=@"/tmp/dbus-tnz6MJeUIQ"}, 23) = 0 <0.000042> 17:00:39.776654 fcntl(5, F_GETFL) = 0x2 (flags O_RDWR) <0.000027> 17:00:39.776755 fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK) = 0 <0.000025> 17:00:39.776880 geteuid() = 1000 <0.000024> 17:00:39.777005 getsockname(5, {sa_family=AF_FILE, NULL}, [2]) = 0 <0.000027> 17:00:39.777272 poll([{fd=5, events=POLLOUT}], 1, 0) = 1 ([{fd=5, revents=POLLOUT}]) <0.000029> 17:00:39.777403 sendto(5, "\0", 1, MSG_NOSIGNAL, NULL, 0) = 1 <0.000035> 17:00:39.777526 sendto(5, "AUTH EXTERNAL 31303030\r\n", 24, MSG_NOSIGNAL, NULL, 0) = 24 <0.000033> 17:00:39.777658 poll([{fd=5, events=POLLIN}], 1, 4294967295) = 1 ([{fd=5, revents=POLLIN}]) <0.000028> 17:00:39.777783 read(5, "OK f978c8f212eeed49a3acedae51efd"..., 2048) = 37 <0.000034> 17:00:39.777919 poll([{fd=5, events=POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) <0.000030> 17:00:39.778055 sendto(5, "NEGOTIATE_UNIX_FD\r\n", 19, MSG_NOSIGNAL, NULL, 0) = 19 <0.000033> 17:00:39.778176 poll([{fd=5, events=POLLIN}], 1, 4294967295) = 1 ([{fd=5, revents=POLLIN}]) <0.000027> 17:00:39.778291 read(5, "AGREE_UNIX_FD\r\n", 2048) = 15 <0.000030> 17:00:39.778410 poll([{fd=5, events=POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) <0.000027> 17:00:39.778585 sendto(5, "BEGIN\r\n", 7, MSG_NOSIGNAL, NULL, 0) = 7 <0.000033> 17:00:39.778738 poll([{fd=5, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) <0.000020> 17:00:39.778848 sendmsg(5, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\1\0\0\0\0\1\0\0\0n\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 128}, {"", 0}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 128 <0.000027> 17:00:39.779019 poll([{fd=5, events=POLLIN}], 1, 25000) = 1 ([{fd=5, revents=POLLIN}]) <0.000964> 17:00:39.780161 recvmsg(5, {msg_name(0)=NULL, msg_iov(1)=[{"l\2\1\1\v\0\0\0\1\0\0\0=\0\0\0\6\1s\0\6\0\0\0:1.184\0\0"..., 2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 262 <0.000034> 17:00:39.780422 recvmsg(5, 0x7fff10996e00, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) <0.000028> 17:00:39.780655 sendmsg(5, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\1\34\0\0\0\2\0\0\0\200\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144}, {"\22\0\0\0org.xfce.Appfinder\0\0\5\0\0\0", 28}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 172 <0.000036> 17:00:39.780835 poll([{fd=5, events=POLLIN}], 1, 25000) = 1 ([{fd=5, revents=POLLIN}]) <0.000088> 17:00:39.781025 recvmsg(5, {msg_name(0)=NULL, msg_iov(1)=[{"l\2\1\1\4\0\0\0\3\0\0\0=\0\0\0\6\1s\0\6\0\0\0:1.184\0\0"..., 2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 84 <0.000030> 17:00:39.781202 recvmsg(5, 0x7fff10996ea0, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) <0.000025> 17:00:39.781393 sendmsg(5, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\1\t\0\0\0\3\0\0\0\200\0\0\0\1\1o\0\23\0\0\0/org/xfc"..., 144}, {"\1\0\0\0\0\0\0\0\0", 9}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 153 <0.000035> 17:00:39.781564 poll([{fd=5, events=POLLIN}], 1, 5000) = 0 (Timeout) <5.005171> 17:00:44.787206 open("/usr/lib/x86_64-linux-gnu/charset.alias", O_RDONLY) = -1 ENOENT (No such file or directory) <0.000151> 17:00:44.787709 write(2, "\n(xfce4-appfinder:4684): xfce4-a"..., 288 (xfce4-appfinder:4684): xfce4-appfinder-CRITICAL **: Failed to open window: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. ) = 288 <0.000165> 17:00:44.788440 brk(0x7f19a6202000) = 0x7f19a6202000 <0.000148> 17:00:44.788986 fstat(5, {st_dev=makedev(0, 7), st_ino=29541, st_mode=S_IFSOCK|0777, st_nlink=1, st_uid=1000, st_gid=1000, st_blksize=4096, st_blocks=0, st_size=0, st_atime=0, st_mtime=0, st_ctime=0}) = 0 <0.000123> 17:00:44.789354 fcntl(5, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK) <0.000077> 17:00:44.789597 write(4, "\1\0\0\0\0\0\0\0", 8) = 8 <0.000074> 17:00:44.790127 sendmsg(5, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\1\1_\0\0\0\4\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144}, {"Z\0\0\0type='signal',sender='org.xf"..., 95}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 239 <0.000080> 17:00:44.790405 sendmsg(5, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\1\1\237\0\0\0\5\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144}, {"\232\0\0\0type='signal',sender='org.fr"..., 159}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 303 <0.000079> 17:00:44.790811 sendmsg(5, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\1\24\0\0\0\6\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144}, {"\17\0\0\0org.xfce.Xfconf\0", 20}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 164 <0.000031> 17:00:44.795019 lstat("/etc/gtk-2.0/gtkrc", 0x7fff10996990) = -1 ENOENT (No such file or directory) <0.000039> 17:00:44.795185 access("/etc/gtk-2.0/gtkrc.en_US", F_OK) = -1 ENOENT (No such file or directory) <0.000028> 17:00:44.795362 access("/etc/gtk-2.0/gtkrc.en", F_OK) = -1 ENOENT (No such file or directory) <0.000053> 17:00:44.795575 lstat("/home/snild/.gtkrc-2.0", 0x7fff10996990) = -1 ENOENT (No such file or directory) <0.000030> 17:00:44.795713 access("/home/snild/.gtkrc-2.0.en_US", F_OK) = -1 ENOENT (No such file or directory) <0.000028> 17:00:44.795829 access("/home/snild/.gtkrc-2.0.en", F_OK) = -1 ENOENT (No such file or directory) <0.000035> 17:00:44.796462 access("/home/snild/.themes/Greybird/gtk-2.0/gtkrc", F_OK) = -1 ENOENT (No such file or directory) <0.000047> 17:00:44.796632 access("/usr/share/themes/Greybird/gtk-2.0/gtkrc", F_OK) = 0 <0.000029> 17:00:44.796754 lstat("/usr/share/themes/Greybird/gtk-2.0/gtkrc", {st_dev=makedev(8, 1), st_ino=12450, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=48, st_size=22988, st_atime=2013/07/24-16:44:17, st_mtime=2013/03/18-18:39:26, st_ctime=2013/06/14-21:48:48}) = 0 <0.000022> 17:00:44.796911 open("/usr/share/themes/Greybird/gtk-2.0/gtkrc", O_RDONLY) = 6 <0.000032> 17:00:44.797069 read(6, "# Author: Simon Steinbei\303\237\n# The"..., 4000) = 4000 <0.000023> 17:00:44.798248 brk(0x7f19a6224000) = 0x7f19a6224000 <0.000041> 17:00:44.799211 access("/home/snild/.gtk-2.0/2.10.0/x86_64-pc-linux-gnu/engines/libmurrine.so", F_OK) = -1 ENOENT (No such file or directory) <0.000045> [... cut ...]