i missed a good few updates due to being away so not shure when this started. when ripping a disk using IDE (now won't work with ASPI, i get a "can not open drive" error) there is a 3-4 second pause between tracks where MJ doesn't respond, but isn't using any CPU time.
Media Jukebox PLUS 8.0.336
Install Path: C:\Program Files\J River\Media Jukebox\
CPU: AMD Athlon 1526 MHz MMX
Memory: Total - 490 MB, Free - 299 MB
OS: Microsoft Windows 2000 Workstation 5.0 Service Pack 2 (Build 2195)
Internet Explorer: 5.00.3315.1000
ComCtl32.dll: 5.00.3103.1000
Shlwapi.dll: 5.00.3315.1000
Shell32.dll: 5.00.3315.2902
wnaspi32.dll: 4.60 (1021) , ASPI for Win32 (95/NT) DLL, Copyright © 1989-1999 Adaptec, Inc.
Aspi32.sys: 4.60 (1021)
also using a Plextor 40x12x40 in an external Firewire case, but this hasn't been a problem before.