Users of online calling service Skype have been hit by a bug that has caused instant messages (IM) to be sent to the wrong contacts.
Skype, owned by Microsoft, said that only a “small number of users” were affected.
It called the bug a “rare occurrence” but did not go into details about what caused it or exactly how many people were affected.
Skype says it will send out a software update that fixes the problem in the next few days. It plans to notify users once the update is available.
The Skype clients impacted include: Skype 5.9 and 5.10 for Windows, Skype 5.8 for Mac, Skype 4.0 for Linux, Skype 1.2 for Windows Phone, Skype 2.8 for Android, Skype 4.0 for iOS.
The bug was first described in Skype’s online support forums and reported in various technology blogs.
Skype says it occurs when a user’s Skype program crashes during an instant message session.
In some cases this can lead to the last IM that person sent being sent to a different contact after they restart the program.