HI Dark This is a known issue and nothing to do with ST5, it is a problem with how mIRC deals with large numbers.
There are two ways around the problem, 1 reduce your scoring system so the scores never get that high, or 2 write some kind of script that detects the scores have breeched or are getting close to the limit and reduce them somehow
The first idea is the easiest as the 2nd idea will never seem very fair
I am having problems with punctuation when the points pass of 123456789, start to give points negative, thus stay -123456789 as I could arrange in the ST5.0 I am thankful will be able to be helped me