Description of problem:

Export template ( with override existed  ) fails sometimes .
See attached logs for details. 
Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:

2012-04-11 17:10:18,660 - MainThread - templates - DEBUG - Action request content is --  url:http://localhost:8080/api/templates/f70ac93e-a1f5-4a05-b71e-be6a3b480d0a/export body:<action><async>false</async><grace_period><expiry>10</expiry><absolute>false</absolute></grace_period><storage_domain><name>ExportDomainRest</name></storage_domain><exclusive>true</exclusive></action> 
2012-04-11 17:11:18,030 - MainThread - templates - DEBUG - Response body for action request is: <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<action>
    <async>false</async>
    <grace_period>
        <expiry>10</expiry>
    </grace_period>
    <storage_domain>
        <name>ExportDomainRest</name>
    </storage_domain>
    <exclusive>true</exclusive>
    <status>
        <state>failed</state>
    </status>
</action>

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Actual results:


Expected results:


Additional info: