PayPal, which allows users to send money via email, was upgrading its computer systems when it "experienced configuration problems," said a PayPal spokesperson.
PayPal is growing by 12,000 customers a day and has more than quadrupled in size over the first three months of the year, the company said. It suffered a series of brief site outages three weeks ago.
According to Web measurement firm PC Data, PayPal was among the most trafficked financial sites during the month of April. As person-to-person payment firms catch on with the public, especially auctioneers, the growing number of firms entering the market will be under increased pressure to perform better than the competition. Analysts have said that providing a safe, secure, well-functioning site is key to building trust with consumers.
PayPal merged with X.com in March shortly after eBay and Wells Fargo