From time to time, I'm getting spurious control characters appearing in pages. The browser shows them as little diamonds and such like, but they can be various control characters, nulls, control-A, etc.
The only workaround I have found is to manually edit them out of the page file on the server. Editing them out via "Edit Page" in the browser is not usually effective.
I don't know what is causing them to appear, it seems to be random and spontaneous.
I'm running on Debian Lenny, but with the version of DokuWiki as specified, not the Debian one.
My webserver is nginx-0.6.32-3+lenny3, and PHP5 version 5.2.6.dfsg.1-1+lenny4.