Twitter is experiencing a limited outage, stopping a number of users from being able to load tweets.

The problems follow a crash on Wednesday that said tweets were not loading properly, and that left the 'For You' section inaccessible for iPhone users.

"Twitter is experiencing international outages for some users; incident not related to country-level internet disruptions or filtering," Internet outage tracker NetBlocks said.

In early February, Twitter experienced a wider outage. In an email to staff seen by Fortune, CEO and new owner Elon Musk said: "Please pause for now on new feature development in favor of maximizing system stability and robustness, especially with the Super Bowl coming up."

In a follow-up email, he added that the company “should also pause on transitioning away from Sacramento, consolidating Atlanta,” which are data centers Twitter uses, “and reducing [Google Cloud Platform] usage until at least next week.”

When he bought the company for $44 billion last year, Twitter operated three data centers - one in Sacramento, another in Atlanta, and a third in Portland. It also spent heavily on Google Cloud services.

But, after loading up the company with expensive debt, Musk was forced to cut costs. Along with large layoffs, Musk ordered the closure of the Sacramento data center on Christmas Eve, downsized Atlanta, and slashed Google Cloud spend - with an eye to saving $1 billion. The service soon suffered a brief partial outage, but did manage to maintain uptime during the 12 February Super Bowl.