Internet service provider Virgin Media is taking steps to rectify technical problems currently being experienced by some of its SuperHub users.
The broadband router is supplied with the firm's high-speed broadband deals, but a data throughput issue is reported to be limiting users' downloading capabilities.
As such, 100Mb, 50Mb and 30Mb broadband deal subscribers are struggling to access speeds anywhere near the headline rate.
"Whilst the vast majority of customers are unaffected, we are actively investigating reports of reduced performance under some configurations," said a Virgin Media spokesperson.
"Testing is under way, and we expect to resolve the issue using a firmware update which will be automatically pushed out to SuperHub users as soon as a fix has been confirmed."
Virgin Media launched its new 100Mb fibre services in December 2010, activating networks in Corby, Barry, Farnborough and Heckmondwike.