I just switched to a new theme yesterday. I've noticed since then, that at various times when I visit my site, it is totally blank, white, nothing there at all. I freaked out the first time this happened. I was able to go to my admin panel and discovered that no theme was set. Once I re-set the theme, my site returned just fine.
It keeps happening though. It's like my theme won't "stick" or something. Any ideas what the problem may be?