i dont think u guys have to worry. mine all not affected the last time i checked on 30.4.2014, my wife's only 1 cert affected. straight away we emailed the manager. He explained it's due to the HQ trying to revert back to paying FDs' interest  on 1st of every month, may be in stages, so some affected some not, finally all will, if their plan goes through.  This is a silly system as it can confuse you when you have so many certs on various days of the month and you find it hard to identify which interest for which cert.

So that FD was dated 28th. and interest was "missing" on 28.4.14. The system for some funny reason credited a lesser amount of it on 23.4.2014 (your so called "advance"), later on, the remainder on 1.5.2014, added up it was the correct amount as expected.

May be end of this month when i check again, more FDs will be affected, but no worries you get your dues at the end the same.

There  shouldn't be a case of BR owing you interest, or forget to pay or will only pay you next month...check you own account carefully, likely the interest  paid in May 2014 were partial, and the remainder will come on 1.6.2014.

What is the general understanding of big sum & small sum?    Big sum = above Rm500k or Rm100k or how much?
Small sum = Rm10k?

Obviously you are the big boy...

When RHB merged with CIMB, all the FD rate would follow CIMB. There's some risk that they might not honor the existing FD placement rate in RHB after the merger 

You mean you had FD with Southern bank? Or you used to work for Southern bank?

then good for those who take up MBSB 60 months deal at 4.7%, from non-pidm to pidm protected