Vim warns of swap files in "/var/tmp/"

Getting "swap file exists" warning. There are no swap files anywhere in my user directory. Then I notice the text of the warning: 

Swap file "/var/tmp/writing.taskpaper.swp" already exists!

I'm gathering this has something to do with the fact that that I'm getting what I take to be gvim instead of macvim. 

I've deleted the swap files, but I'm still getting gvim instead of macvim. 

Why is this happening? How can I stop it?

Thanks,

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Eric Weir

Decatur, GA

eeweir@bellsouth.net

"Style is truth." 

- Ray Bradbury