If your IMs on Skype are MIA, don’t worry: the company is working on fixing a bug that’s been sending people’s instant messages to the wrong contacts.

Some of Skype’s IM users had reported that after a crash, the last instant message they had entered or sent was delivered to the wrong person once the users rebooted or logged in under a different name.

The company confirmed the problem on July 16 in a tweet: “We’re aware of a bug that in very rare cases sends IMs to unintended recipients. Most users are unaffected. We are working on a fix.”

Apparently, the bug is only a problem when there is a crash. The software versions affected include Skype 5.10 for Windows, Skype 5.8 for Mac, Skype 4.0 for Linux, and Skype 1.2 for Windows Phone.

Wrote Skype’s Raul Liive in a blog post dated July 17, “Although we cannot determine precisely how many users may have been affected by this error, we believe the number is small given the very specific circumstances under which the error occurs.”

Other versions of the software, including Skype 5.9 for Windows, Skype 2.8 for Android, and Skype 4.0 for iOS, were not affected.

Still, one misdirected message could do a lot of damage, especially if the subject matter (or person receiving the message) is sensitive. Skype recommends that users download the latest version of the software when it becomes available. Until that happens, SocialTimes recommends that you keep your messages PG.