The chief executive of Research in Motion (RIM), Thorsten Heins, has apologised to customers using the firm's BlackBerry services for the outage that struck users across the UK and Europe on Friday.
The outage lasted for around six hours, starting at 6am on Friday, and Heins used his apology to give some more information on the extent of the issue.
"Up to six percent of our user base may have been impacted. Preliminary analysis suggests that those customers may have experienced a maximum delay of three hours in the delivery and reception of their messages," he said.
"We are conducting a full technical analysis of this quality of service issue and will report as soon as it concludes. I again want to apologise to those customers who were impacted today."
Heins also confirmed that no data or messages were lost between users during the outage now that services have been restored.
The investigation will be the second such inquiry the firm has had to carry out in under a year after a huge outage in late 2011 left the firm red-faced as users across the world were left without data access to key services for almost three days.
No information on the specific cause of that incident has yet been made official.
The rapid response and update on the extent of the outage marks a clear change in corporate strategy from RIM which was heavily criticised last year for its slow drip feeding of information to the media, which exacerbated the frustration many felt with the firm.
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