I have a strange and--disturbingly--reoccurring issue where my permalinks and administrative login will break due to the siteurl and home fields in the wp_options table being altered.
I'm running a multisite 3.0 install and Ron and Andrea's multisite plugin, so I have multiple subdirectory networks on different subdomains.
The problem always is the same: if I'm on a subdomain like sub.domain.com, all permalinks and the admin login will suddenly point to domain.com/sub, obviously breaking in the process.
Manually changing the two fields in the db from domain.com/sub back to sub.domain.com resolves the issue, but it happens with seemingly no reason or warning, and has happend at least 3 times on about a dozen sites.
Also, twice it has changed to something totally crazy like http://or/g/sub which breaks the site entirely.
Does anyone have any clue what could be going on here?