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No immunity. I cross reference my log files before posting about slow updates. A year or so ago someone who posted slow update threads every weekend apologized because he hadn't been checking his server log files, and upon inspecting them saw it wasn't google, it was simply a slow weekend. This was a bit annoying because in many of his threads I asked him if he had checked his server logs and he never responded.
Generally, the updation reports lack a validation with server files. It appears as if these adsensers are ONLY looking at their adsense stats. Makes for a poor report. So if you're going to post about slow stats updates, you'll have more credibility if you are looking at more than your AdSense control panel.
The update reports would be more useful if they were backed up with a statement that the poster actually cross-checked their server logs.