If you are using only Simple XML in your Dashboards, you should no longer need the pdfserver app in Splunk 5+. There are now native PDF capabilities that work with the Simple XML dashboards. I would recommend trying to remove the pdfserver application and reschedule the search to deliver PDFs.
Also, the time range that is showing seems to be for a specific range of time very close to the epoch time of zero, or January 1, 1970. You should double-check your time range specified in the saved search and make sure it is over the time period you would like. For example, if the search is over the previous hour, you may want to do something like -65m@m to -5m@m. This time lag will ensure that all the events you are searching are safely in the index.
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