The web site of retailer Richer Sounds - which flogs sound systems, amps, home cinema systems and the like - has been floored following the fire at the Buncefield fuel depot in Hemel Hempstead.
Richer Sounds' site is hosted by Northgate Information Solutions whose buildings adjacent to the oil depot have been seriously damaged by the blast.
As a result, Richer Sounds' site is down along with some IT systems at the firm including email.
A spokeswoman for the retailer told El Reg: "Richer Sounds' web site is temporarily off line due to the Buncefield fuel depot explosion.
"Northgate Information Solutions Data Centre, which hosts our network, is unfortunately situated next to the scene of this major incident.
"Richer Sounds are doing everything we can to restore the web site and network, and hope to be operational as soon as humanly possible."
Although the web site has been hit, its 44 stores across the country are open for business although some processes are having to be done manually, she said.