Hi 
We have been having the same problem.  We were using Shandon Histomount and
Clearite III.  We just switched to Richard Allen mounting media last week
and are waiting to see if problem persists.
Cheryl

> ----------
> From: 	Levac Caron, Joelle[SMTP:jlcaron@Ottawahospital.on.ca]
> Sent: 	Monday, April 03, 2000 3:57 PM
> To: 	'histonet@pathology.swmed.edu'
> Subject: 	Leica coverslipper
> 
> Hi
> Has anyone encountered "bubbles" or "voids" on slides after  a 2-week
> storage??  A  Leica CV5000 coverslipper was used to mount slides.
> Which clearing agent and mounting medium are you using??
> Joelle
>