Nigeria Banks Computer Networks

What is happening within the Banking Industry Computer Network?
First it was FirstBank Network that was down, then UnionBank followed (this one last for 2weeks), making withdrawal difficult. Now it is SKYE Bank that is having same problem. Imagine a local Cheque paid into an account is yet to be cleared after a week. Long queue in the banking hall even the ATM machine is not helping.

Is because of lack of Qualified ManPower or their over-reliance on foreign software/personnel?