audio slow down and distortion

What has happened to me some times in 2.3 and now in 2.4 RC is this:
Example:
I turn FX1 on assigned to deck A.
The track at deck A finishes and now deck B is playing.
I forget FX1 to on.
After a while the deck B track start playing slower and distorted.
Has anyone experienced something similar?
Can anyone reproduce it?
My laptop specs are:
intel core 2 duo @ 1.82ghz
2gb RAM
Windows xp pro
Example:
I turn FX1 on assigned to deck A.
The track at deck A finishes and now deck B is playing.
I forget FX1 to on.
After a while the deck B track start playing slower and distorted.
Has anyone experienced something similar?
Can anyone reproduce it?
My laptop specs are:
intel core 2 duo @ 1.82ghz
2gb RAM
Windows xp pro