Zoho Freezes Browser

While using Zoho Sites builder with Firefox 27.0.1 after several hours it slows to a crawl or totally freezes the browser (Not Responding). Once it freezes the browser (which sometimes happens without the warning sign of slowing down) I lose any unsaved changes to the site. I tried restarting FF with Add-Ons disabled. It still froze on me. I never had these problems until I started using Zoho Sites so that leads me to believe Sites is the culprit but isn't conclusive evidence of such. I do have Google email and Drive open at the same time as Zoho Sites, but that really shouldn't be an issue. If it is it will be inconvenient but I can stop using them in the browser at the same time.