apache2 crashed with SIGSEGV in module_destructor()

Binary package hint: apache2

Ubuntu 9.10 dist-upgraded to 10.4 (February 25), installed as a VM in VirtualBox (Windows 7)

Distributor ID: Ubuntu
Description: Ubuntu lucid (development branch)
Release: 10.04
Codename: lucid

apache2:
  Installed: 2.2.14-5ubuntu1
  Candidate: 2.2.14-5ubuntu1
  Version table:
 *** 2.2.14-5ubuntu1 0
        500 http://ro.archive.ubuntu.com lucid/main Packages
        100 /var/lib/dpkg/status

Apache crashes on sudo /etc/init.d/apache2 reload (but doesn't crash on start/stop).

ProblemType: Crash
Architecture: amd64
Date: Thu Feb 25 17:31:51 2010
Disassembly: 0x7fc4feab1c60: Cannot access memory at address 0x7fc4feab1c60
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/lib/apache2/mpm-prefork/apache2
Package: apache2.2-bin 2.2.14-5ubuntu1
ProcCmdline: /usr/sbin/apache2 -k start
ProcEnviron:
 PATH=(custom, no user)
 LANG=C
ProcVersionSignature: Ubuntu 2.6.32-14.20-generic
SegvAnalysis:
 Segfault happened at: 0x7fc4feab1c60: Cannot access memory at address 0x7fc4feab1c60
 PC (0x7fc4feab1c60) not located in a known VMA region (needed executable region)!
SegvReason: executing unknown VMA
Signal: 11
SourcePackage: apache2
StacktraceTop:
 ?? ()
 ?? ()
 module_destructor ()
 ?? () from /usr/lib/apache2/modules/libphp5.so
 zend_hash_graceful_reverse_destroy ()
Title: apache2 crashed with SIGSEGV in module_destructor()
Uname: Linux 2.6.32-14-generic x86_64
UserGroups: