Occasionally fail to create folder in MOSS 2010 - How do I diagnose this?

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http://serverfault.com – I have a process that creates folders in a SharePoint document library using the SPFolderCollection.Add method. Sporadically, the Add method fails with a: Exception ('COMException') message: Cannot create folder "sites/GTS01/GTSArchive/4F2311C51CD501CEE10080000A144153". Stack Trace: at Microsoft.SharePoint.Library.SPRequestInternalClass.AddOrDeleteUrl(String bstrUrl, String bstrDirName, Boolean bAdd, UInt32 dwDeleteOp, Int32 iUserId, Guid& pgDeleteTransactionId) at Microsoft.SharePoint.Library.SPRequest.AddOrDeleteUrl(String bstrUrl, String bstrDirName, Boolean bAd (HowTos)