It's really more a workaround than a fix but it works.
It looks like some recentish windoze update may be the issue as I've done the following and the problems gone.
New partition / disk whatever.
Clean install of XPSP2. ( NO UPDATES )
Omega 16693 (?) Nvidia drivers
Audigy basic driver set.
Logitech 4.6.
Clean LFS install ( copy setups & skins )
2 days testing and no problems.
Seems to work ( 4 me anyway )
AMD XP 2600 O/C 3200
1 Gig Ram
FX5950 Leadtek
It looks like some recentish windoze update may be the issue as I've done the following and the problems gone.
New partition / disk whatever.
Clean install of XPSP2. ( NO UPDATES )
Omega 16693 (?) Nvidia drivers
Audigy basic driver set.
Logitech 4.6.
Clean LFS install ( copy setups & skins )
2 days testing and no problems.
Seems to work ( 4 me anyway )
AMD XP 2600 O/C 3200
1 Gig Ram
FX5950 Leadtek