Just thought I'd share this with you all. I upgraded my firmware to v3.0, and all was sweet, fast and smooth. Then I installed SS 4.0, had to re-initialise my walkman and proceeded to transfer all my music back onto it. It was slow, but at least it worked. Then I used my walkman, and it was about as slow as a really, really slow thing. I was loathe to go back to connect player, or SS 3.4 cause I didn't want to go through the whole re-initialise thing again, so I decided to defrag the walkman using the PC's defrag. First I analysed the walkman, and it didn't look very fragmented, but I thought I'd do it anyway, and lo and behold, super-fast walkman again! For those of you finding the walkman painfully (or unusably) slow after installing SS 4.0, try defraging your walkman. Worked a treat for me. Hope this helps.