[themes] Error

[Vishakha Tambe]

*Hello all,
  I am getting following error in drupal while clicking on "Administer"
module.

Fatal error*: Allowed memory size of 8388608 bytes exhausted (tried to
allocate 11520 bytes) in *
/opt/lampp/htdocs/drupal-5.9/modules/system/system.install* on line *2790

Can anybody tell me about how to solve this error.

Regards,
   Vishakha.
*
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