If.....
Live TV & OnDemand are unaffected, but all recorded and delayed/paused programmes are problematic, this would tend to suggest your hard drive may have issues.
Hard drive faults - if this is what yours is - are not repairable, may get worse over time and eventually fail outright. If it continues beyond a few weeks and/or gets worse, I'd suggest you call VM to report your fault.
150 from a VM phone, or 0345 4541111 from any other phone.
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