I just wrote a small module for OXID eShop that automatically deletes the “tmp/” folder at the beginning of each call. The module does nothing when shop is in productive mode.
Background: The OXID eShop does its smarty and its object caching in the folder “tmp/”. Even when productive mode ist off some caching mechanism still work which sometimes causes funny behaviour during development: “Why can’t I see a change, I just changed the whole function/database/template …” In the past you had to delete all files from”tmp/” manually, now you have this small module doing the work 
Of course this module is open Source (GPL V3) and can be downloaded directly here(mude_dev) or you can have a look at OXID exchange and don’t forget to vote for us 
Productive Mode for OXID Shop « euroblaze | OXID e-Commerce Admin Blog
on Mai 29th, 2010
@ 16:25:
[...] stages and cause panic to developers sometimes. If you are an active developer, use this module from Musterdenker for emptying all cache files from /tmp during the whole development [...]