Comment 7 for bug 505085

On https://bugzilla.gnome.org/show_bug.cgi?id=150483 in the last comment there's this:
"Starting with gnome 2.23.x, the oldest thumbnails are purged shortly after login when the cache exceeds 64 MB, or if they are older than 60 days, (...)"

However the limits were redefined in Ubuntu, see in gconf-editor:
/desktop/gnome/thumbnail_cache/maximum_age and
/desktop/gnome/thumbnail_cache/maximum_size

They were set to 512MB and 180 days, that means dozens of thousands of thumbnails to keep, simply doesn't make sense, these limits should be lower.