php PEAR conflict with other drupal modules

Using:

CiviCRM 4.0.5
Drupal 7.8
Ubuntu 11.04

I have came across an incompatibility between CiviCRM's PEAR packages, and another system-installed PEAR package. The package in question is "Services Atlassian Crowd", and the conflict appears to be between the PEAR_Exception class being called independently by both packages.

/var/log/apache/error.log provides:

[error] [client 180.76.5.111] PHP Fatal error: Cannot redeclare class PEAR_Exception in /var/www/dev_OSMsite/sites/all/modules/civicrm/packages/PEAR/Exception.php on line 389

Services_Atlassian_Crowd is used by the drupal / crowd interconnect module, which provides authentication for drupal against the Atlassian stack (Confluence, Jira).

Accessing any page in the /civicrm directory results in an HTTP 500 Internal Server Error, and more log entries to /var/log/apache/errors regarding the PEAR_Exception class.

Can this be patched on the civicrm side?