[Zope] Problem with reindexing of ZCatalog

Hi There I am facing a problem with the reindexing of zcatalog.After catalogging the file i am giving this fileObj.portal_catalog.manage_catalogReindex(REQUEST,RESPONSE,fileObj.folder .absolute_url()) command to reindex zcatalog so that i am able to search on the files. But as the size of my zcatalog keeps on increasing it is giving me Error Type: WinHttp.WinHttpRequest (0x80072EE2) The operation timed out /default.asp, line 489 Can anyone help me with this. Best Regards Mamta