IonCube - Updating ISSUE - Plz help me

The 5.3, in the extension filename /usr/local/IonCube/ioncube_loader_lin_5.3.so, refers to the version of PHP, not the version of IonCube. If you download and extract the archive from PHP Encoder, protection, installer and performance tools from ionCube: Loader Download, you will see extension files for several different PHP versions:

Code:

# wget http://downloads2.ioncube.com/loader_downloads/ioncube_loaders_lin_x86.tar.gz
--2011-03-04 08:33:42--  http://downloads2.ioncube.com/loader_downloads/ioncube_loaders_lin_x86.tar.gz
Resolving downloads2.ioncube.com... 64.85.170.46
Connecting to downloads2.ioncube.com|64.85.170.46|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2672940 (2.5M) [application/x-gzip]
Saving to: `ioncube_loaders_lin_x86.tar.gz'

100%[==================================================================================================================================================================>] 2,672,940   1.12M/s   in 2.3s    

2011-03-04 08:33:45 (1.12 MB/s) - `ioncube_loaders_lin_x86.tar.gz' saved [2672940/2672940]

# tar zxvf ioncube_loaders_lin_x86.tar.gz 
ioncube/
ioncube/ioncube_loader_lin_4.3_ts.so
ioncube/ioncube_loader_lin_5.2_ts.so
ioncube/LICENSE.txt
ioncube/loader-wizard.php
ioncube/ioncube_loader_lin_4.4_ts.so
ioncube/ioncube_loader_lin_5.1_ts.so
ioncube/ioncube_loader_lin_5.0.so
ioncube/ioncube_loader_lin_5.1.so
ioncube/ioncube_loader_lin_5.3_ts.so
ioncube/ioncube_loader_lin_5.2.so
ioncube/ioncube_loader_lin_4.2.so
ioncube/README.txt
ioncube/ioncube_loader_lin_5.0_ts.so
ioncube/ioncube_loader_lin_4.3.so
ioncube/ioncube_loader_lin_4.4.so
ioncube/ioncube_loader_lin_4.1.so
ioncube/ioncube_loader_lin_5.3.so

You are using PHP 5.3, so /usr/local/IonCube/ioncube_loader_lin_5.3.so is the correct extension file for your version of PHP.