The souls of the saved experience discomfort through shame as their unrepented sins are revealed in full and as they stand "naked" before God and all the saints. The period from particular to Final Judgment is a period of purification, through prayers, commemorative services, fasting, etc. not by being roasted to God's "satifaction." The fires they feel are not real fires, but God's love which burns all sinners confornted with Truth.
Dear Kosta, This actually explains purgation of sin very well.
:)