It seems that the IPSDefs update is not working properly for the last 15 days or so.
Some times the Definitions in the Definitions folder in the PC does not match with that of the same on the Norton Site. The dates and versions do not match.
And for the last 2-3 days I am seeing a strange behaviour. In the IPSDefs folder it shows the version of 8th april but on the site it shows the two more were released on 10th and 11th but is not updating on PCs here. Other LiveUpdates are happening perfectly OK.