I was wandering is this possible to change this? I cant find answers anywhere. Today I was noticed that my ~/.thumbnails is about 500 mb. So I have mounted this folder in tmpfs, it gives me better performance and I don't have to worry about size of ~/thumbnails - but this solution work only for one user. It would be great if I could change it globally for example to /mnt/thumbs, than mount this folder in RAM - and this will work for all users. Maybe it is a way to redirect one folder to another?
Sorry for my english.
BTW - I was mounted Firefox cache folder in tmpfs too - try this you will be shocked how its improve his performance. Check this: