Dana,
I feel your pain. I use the same brand of CA glue and have had this happen once. Now to avoid the cap becoming glued to the bottle, I never let the glue touch the cap. Instead, when I need some, I remove the cap and then take some glue directly out of the bottle with a 1 mL disposable plastic pipette (like an eyedropper - from the LHS) and drop it into a puddle in a tray made from scrap plastic or kitchen foil. I then just apply it from the puddle (toothpick, mechanical pencil, or if you can get them, really fine bore disposable pipettes are the best). This way the glue in the bottle never touches the cap so it can't seize.
You can get the plastic pipettes at the LHS, but they are pricey (I get mine from work for free!). Because the bore on the pipette is relatively large, though, you can just shake out any residual CA and re-use it - it won't get plugged. I actually keep mine taped to the side of the CA bottle for when I need some.
Hope this helps.
Jim
Current Projects:
Tamiya M1A2
Tamiya LRDG Chevrolet CWT 30