Was there a speed constraint in the FMGC flight plan? i.e. you've got a turn which requires speed to be held back (but 167/172 knots seems very slow) this is sometimes coded as a constraint. However, this should not result in the selected speed appearing in the FCU - that only occurs with a pre-selected speed on the CLB PERF page, and then you "manage" the speed once you don't need it any more. With an FMGC FLT PLN waypoint speed constraint, this will jump to CLB speed once the waypoint is sequenced.
Is this A318/19/20 or 321. If the heavier types those speeds are looking like V2+10 depending on TOW. Odd.
Hopefully you didn't clean up......
A4