A problem with O2's data network left some of its customers unable to access their broadband connections on Monday (August 5th).
O2 confirmed via its Twitter page that it was once again having difficulties that were impacting upon internet usage.
In the last fortnight the operator has had two other issues with its data network that have caused problems for its broadband users.
Internet and MMS services were affected on July 22nd, while roaming services were struck a few days later
Tweeting about the third instance of difficulties, O2 said: "We're having a problem with our data network which will affect data services for some customers. We are working to fix this asap."
According to IT Pro, a spokesperson from O2 explained that the source of the problem had been fixed by engineers, but would not reveal what the cause had been.
The outage lasted about two hours and the company later tweeted to say that it had "fixed" its data network and customers "should now be able to access the internet again".