Quota exceeded error 22

[mwindley]

I am attempting to sync a list by xml proxy, 1200 records, 12 fields , xml file in 701KB.

I receive the following warning.
QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to add something to storage that exceeded the quota.
Usually occurs at SyncStorage.js
My other files that sync are smaller and all work OK.

Any leads on how locate my issue. Is local or Sencha.io issue
I have set local storage up from 5 Mb to 10, 100, 500, no change.
Only way to restart program is to reset Safari.?
Will try to find row limit that makes i ok file.
Regards Maurice
Mac,Lion,