Twitter users lost key features yesterday as engineers at the micro-blogging site struggled to repair networking equipment.
During the outage, users were either unable to log in to the website, or experienced an excruciatingly slow service.
Twitter explain the difficulties to users with the message: "Over capacity … Too many tweets!”
On its support blog, Twitter said: “We had a system-side issue this morning starting around [11 a.m. U.S. Eastern Daylight Time] that resulted in Twitter.com experiencing two 30 minute back-to-back incidents over roughly one hour.”
Twitter announced that the problem had been resolved by 1:30pm EDT, but just four hours later the site was suffering problems again. The company blamed its continuing difficulties on the re-emergence of the same networking issues.
According to data released by website monitoring company Pingdom, prior to the incident the social networking platform had only experienced two minutes of downtime this June.
Pingdom also revealed that Twitter last month had an uptime rate of 99.88 per cent, equating to around 52 minutes of downtime. Users had posted 2 billion tweets during May.