BT has apologised to customers over some problems that have been experienced with its Digital Vault service.
According to reports, the broadband provider's data backup service has experienced a range of issues over recent months, which have been blamed on errors related to some planned upgrades.
However, in a recent forum posting, the company claimed just "a small proportion" of its customers have been hit by the problems, although this is unlikely to be any consolation.
"Most importantly, we would like to confirm that these problems have no impact on your data held within the Vault," the statement added.
"The integrity and security of the service is of paramount importance and we test extensively to ensure that we do not jeopardise that."
Details of the problems have come after the internet service provider confirmed plans to more than double the availability of its fibre-optic broadband services in the UK.