Engineers at Twitter are busy plugging away at the microblogging service's latest outage, which appears to be preventing many users from seeing replies and mentions from others.

Twitter's support team confirmed the issue at 11:42am EST, but have not updated since, leaving many users frustrated and unsure of why they can't see replies. Among the flustered is American actress Felicia Day, whose tweet about the outage garnered a number of replies that she, ironically enough, cannot see.

People first started complaining about the outage about four hours prior to press time. The issue appeared to still be underway as we published this post, as searches for terms like "mentions" and "replies" on Twitter continued to evoke dozens of complaints from confused users. Twitter has not yet updated its Status Blog, where outages and service problems are normally explained.

A direct message sent to Twitter Support asking for an update was not responded to by the time we published this post. We'll update this post as we learn more.