Second, I've a little problem with my system: Pulsar 2, Sx, SFP 3.1a, Windows XP (standard mode

When I'm on a project, (espacially with sts3000) and I want to change my sample cd, the system freeze (sfp 3.1a) and I've to close all the SFP. Someone had the same pb ? and could help me ?? plz ??
PS: I've turned off the auto notification insertion but there is always the same pb, thx for ur help
KorgZ1 ...