Is there a delay with USPS tracking right now?

I shipped an item yesterday at 2:30pm, but there is nothing listed under the tracking information when I go online. All it says is "Electronic shipping info received" but there are no updates after that. Is USPS tracking excessively slow sometimes? I'm worried they lost my package. It's for an ebay buyer and the last thing I need is negative feedback over a USPS problem.