Sometimes you can put off installing an iOS update. This is not one of those times. A significant bug has been discovered in iOS 6 that can trigger multiple downloads of streaming media over Wi-Fi and cellular networks. In other words, it could cost you a lot of money in data overages. Thankfully, iOS 6.0.1, which Apple released earlier this month, appears to resolve the issue, according to PRX Labs.

According to the report, this bug was first discovered by This American Life, the popular podcast that PRX Labs hosts. The issue causes files to be downloaded multiple times. As a result, both content distributers and data plan customers could experience “dramatic overage charges.”

Although Apple “does not appear to have acknowledged the specific issue,” some carriers are offering concessions to customers.

Our advice is simple: Please update your iPhone/iPod touch or iPad to iOS 6.0.1 if you haven’t yet done so.

To begin, go into the Settings app and go General > Software Update and then follow directions. Please note: iPhone 5 owners must hit “More Info” first in in order to install a download installer app. Users can also download the update by connecting the iOS device to iTunes via a Mac or PC.