Microsoft has blamed third party software for a Windows Phone 7 glitch that transmitted huge chunks of data over 3G networks, causing some subscribers to exceed their monthly tariff.
The software vendor issued the following vague statement to Seattle PI:
"We have determined that a third party solution commonly accessed from Windows Phones is configured in a manner that potentially causes larger than expected data downloads.
"We are in contact with the third party to assist them in making the necessary fixes, and are also pursuing potential workarounds to address the configuration issue in case those are needed. At this point in our investigation, we believe this is responsible for most of the reported incidents."
Microsoft added that it was looking into "additional potential root causes" for the remainder of customers who reported the data transmission cockup.
"A small (low single-digit) percentage of Windows Phone customers have reported being affected," said MS, without revealing the exact number of punters who had complained about the glitch on their smartphones, nor any details about the third party.
"We are continuing to investigate this issue and will update with additional information and guidance as it becomes available." ®