httpd can't find libmm.so.11 ??

Why do I always have so much pain with upgrades? That's a rhetorical question .. I'm just feeling sorry for myself having worn myself out fighting tooth & nail to get sendmail working again :-( I've just upgraded from 6.3 to 7.0 ... now Apache won't start because if can't find libmm.so.11 But there isn't a libmm.* on my system. Can anyone tell me what this library is and where I can find it? It also moans about a syntax error in httpd.conf ; thought doesn't tell me where. That might be a side effect of the above, I don't know yet. John