Bug#544505: [aptitude] aptitude segfaults on update of package list in ui

[James Hallam <james@jameshallam.info>]

I'm also getting the same issue, with apt 0.7.23.
Sometimes I get:
terminate called after throwing an instance of 'std::out_of_range'
  what():  basic_string::substr

And sometimes I get a segfault, for which dmesg shows something like:
[261680.545501] apt-get[29895]: segfault at 19 ip b7fe32fb sp bf8d4ca0 error 4 
in libapt-pkg-libc6.9-6.so.4.8.1[b7f6b000+c1000]

I did get the following, but not since I reinstalled libc6:
[261137.917517] apt-get[24392]: segfault at 9a0b000 ip b7c28b76 sp bfe19878 
error 4 in libc-2.9.so[b7bb0000+158000]