aptitude assert failure: *** glibc detected *** aptitude: double free or corruption (!prev): 0x09ff8c78 ***

[pcollaog]

Binary package hint: aptitude

when try to use

# aptitude update

aptitude chash... when I use apt-get update works fine

ProblemType: Crash
Architecture: i386
AssertionMessage: *** glibc detected *** aptitude: double free or corruption (!prev): 0x09ff8c78 ***
CrashCounter: 1
Date: Tue Mar 23 09:12:58 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/bin/aptitude
Package: aptitude 0.4.11.11-1ubuntu9
ProcCmdline: aptitude update
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=es_CL.UTF-8
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
Signal: 6
SourcePackage: aptitude
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/tls/i686/cmov/libc.so.6
 abort () from /lib/tls/i686/cmov/libc.so.6
 ?? () from /lib/tls/i686/cmov/libc.so.6
 ?? () from /lib/tls/i686/cmov/libc.so.6
Title: aptitude assert failure: *** glibc detected *** aptitude: double free or corruption (!prev): 0x09ff8c78 ***
Uname: Linux 2.6.32-16-generic i686
UserGroups: