I'm having upload issues with Dropbox and Pixelpipe on my iPhone 4 over 3G. Dropbox error just says that the upload failed. Pixelpipe error asks me if there is an error with the internet connection and states there was failure to allocate memory. A hard re-set seems to solve the problem for a bit, but it always comes back. I've also tried deleting and re-installing Dropbox and Pixelpipe and re-setting the network settings. Next step will likely be a full restore. Anyone have any thoughts on what might be causing this?