Barclays online banking suffered intermittent service for about an hour this morning. The issue also hit some other systems at the bank.

We received several emails from readers unable to log in to their accounts and one unable to make a purchase using their Barclays business debit card. The business banking contact number was also unavailable. Some readers got a "currently unavailable" message while others got a warning page about security certificates.

A spokeswoman for Barclays said: "We had intermittent service on the website for about an hour this morning which had some impact on other systems. Everything should be working again now though."

Barclays and Barclaycard, in the midst of laying off IT staff, have suffered at least four outages this year. ®

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• Barclays online banking takes a dive (7 September 2009)
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• Job cuts start to bite at Barclays (11 June 2009)
• Plague of web bugs descend on British sites (1 June 2009)
• Barclays to lay off more tech staff (11 May 2009)
• Barclays cuts more IT jobs (7 January 2009)
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• Barclays to scrap 1,800 UK tech jobs (15 July 2008)