Is something amiss with GA?

Stats for 10/5/10 seem in error.

[Broadway]

For yesterday (10/5) GA shows a traffic drop off on the order of 20% for my largest site (the drop off shows up in unique visitors and page views). I see a similar drop with some of my other sites, but they have less traffic and it's hard to know for sure if the effect is there.

When I look at my page impressions for Adsense, everything for yesterday looks quite normal. The size of my zipped log file (bytes) for yesterday looks normal. My server's analytics report for yesterday hasn't been generated yet (I guess, or else I don't get the stats until tomorrow with it), so I can't check there. My site's bandwidth usage for yesterday looks fairly normal.

Is anyone else seeing some abnormality in their GA reports for yesterday?

[burns83]

I can also report a 20% drop yesterday, with traffic tailing off to almost nothing shortly after 11AM EST and returning to normal at 4PM EST.

[carguy84]

30% drop here from Tuesday last week to Yesterday. Looks like something misfired with GA. AdSense numbers look normal.

[Broadway]

Thanks for the replies. I needed the reassurance.

[irock]

Same here... but do you guys notice a drop in Quantified Quantcast recorded traffic too?

[kurzo]

Same here - it went to virtually 0 visits for nearly 3 hours - still not updated as of yet

[jmorgan]

Me too.

[tedster]

This tweet from the GA team may be at least a piece of the puzzle:

We are aware of and investigating the issue of a dip in data from 10 - noon PST yesterday - more updates to follow.

[twitter.com...]

[Vrian_Sinth]

I can confirm about a 30% drop across all sites. Glad to see someone else is seeing this too.

[Lapizuli]

My Google Analytics is linked to my AdSense account, and today it is showing a MUCH lower click count and revenue amount than AdSense stats report - about 50% lower.

[Broadway]

As I look at my stats today (the day after I started this thread), it looks like GA has made a correction to yesterday's reporting. Their report of my traffic yesterday now looks normal.

[BillyS]

Yes corrected. For us they were missing about 2 hours of data around noon (Eastern time). They started to reassemble that data last night.