Hi,
I am trying to setup remote debugging on the server. Here's my setup:

# PHP Version: 5.1.6
# Web Server: Apache

Relevant php.ini
==========
(As dbg-wizard.php suggested)
extension=dbg.so-5.1.x
[debugger]
debugger.hosts_allow= <host1> localhost
debugger.hosts_deny=ALL
debugger.ports=7869, 10000/16

;zend extension for optimizer

The glibc version on the server is : 2.5-12

As dbg-wizard.php said, I have moved from local: <mypath>\server\Linux\dbg-3.2.10-Linux-glibc-2.2\x86\dbg.so-5.1.x to server: /usr/lib/php/modules/

I restart apache, and get the following error:
*** glibc detected *** /usr/sbin/httpd: double free or corruption (!prev): 0x08e59d58 ***

Any help here will be greatly appreciated.

Thanks,
Srini

I just checked CentOS 5.1 (glibc 2.5.18, php 5.1.6, dbg-3.2.10) and it did not get any errors.
What other php extensions/zend_extensions do you have? Please provide all the info at nusphere support.
TIA

Thanks Dmitri for the response.

Other extensions in the php.ini are
=======
extension_dir = "/usr/lib/php/modules"

,
zend_extension_manager.optimizer=/usr/local/Zend/lib/Optimizer-3.3.0
zend_extension_manager.optimizer_ts=/usr/local/Zend/lib/Optimizer_TS-3.3.0
zend_extension=/usr/local/Zend/lib/ZendExtensionManager.so
zend_extension_ts=/usr/local/Zend/lib/ZendExtensionManager_TS.so
=====

I tried with zend_optimizer 3.3.3 as well.

Thanks,
Srinivas

This problem is caused by ZendExtensionManager.
Because of it, you can not use extension= for loading debugger if there is any zend_extension. Please read this post, hope it will help you: http://forum.nusphere.com/howto-install-debugger-module-t576.html
Alternatively you can load zendoptimizer directly instead of loading it through zendextensionmanager.