If I attach strace to the synaptic process while it appears to hang, it
prints hundrets of lines like the following:
lseek(42, 3329978, SEEK_SET) = 3329978
read(42, "Package: libgstreamer0.10-0\nDesc"..., 54547) = 54547
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\207'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\317N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\210'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\211'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\320N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\212'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\213'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\321N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\214'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\215'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\322N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\216'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\217'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\323N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\220'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\221'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\324N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\222'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\223'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\325N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\224'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\225'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\326N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\226'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\227'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\327N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\230'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\231'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\330N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\232'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\233'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\331N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\234'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\235'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\332N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\236'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\237'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\333N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\240'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\241'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\334N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\242'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\243'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\335N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\244'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1P\0\0\0\245'&\0w\0\0
\0\1\1o\0\36\0\0\0/org/a11"..., 136}, {"\3\0\0\0add\0\336N\2\0\0\0\0\0
\4(so)\0\0\0\6\0\0\0:1.7"..., 80}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 216
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\4\1\1 \0\0\0\246'&\0\177\0
\0\0\1\1o\0!\0\0\0/org/a11"..., 144}, {"\7\0\0\0defunct\0\0\0\0\0\0\0\0
\0\1i\0\0\0\0\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0},
MSG_NOSIGNAL) = 176
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