If I install either the UPS or the USPS shipping module, the site works fine BUT if both are installed at the same time, the site slows way down when hitting the shopping cart, shipping estimator or the checkout pages. If I delete either module, the site returns back to normal.
zen 1.3.7.1 and I applied the USPS patch (uninstalled and reinstalled). I am running production mode as well.
Thx Sweet
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