Recent upgrade of xfree-xserv: missing DLLs

[fergus]

I just upgraded this morning from XFree86-xserv-4.3.0-1 to 4.3.0-2, jumped
immediately into xdvi, and got a missing DLL message, specifically
libice.dll.
Unfortunately reverting to 4.3.0-1 did not recover things: I get the same
message.
I am not totally certain the two events (upgrade, message) are related:
yesterday there was a massive upgrade of other parts of the XFree86
provision.
Any connection?
Fergus