Hi! I noticed a portamento bug in the midibox sid a long time ago, but I been busy finishing my frontpanel so I haven't mentioned this before now. Set the portamento to "14" (It only happens at this value). Play some notes around F-5, like from G-5 to C-5 while holding down the G key. The bug makes some kind of glissando and restarts the envelopes when pitching past the F-5 note. I have tried 1.7, 1.7a and 1.7_303beta9 and its present in all versions. PS. To TK - I had problems with the Delay function in the osc envolope untill the new bended engine. What did you do to fix it? Best regards Niijaooh