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It has been established previously that thermal switching in high density magnetic media causes a significant time dependence of the coercivity at least for times >10-8 s. Here, the classical Arrhenius-Neel model assuming coherent rotation is applied to systems with distributions in volume, anisotropy and orientation and the numerical results for the time dependent remanent coercivity HCR(t), the viscosity SR, and the irreversible susceptibility, χIRR compared to new experimental data on CrO2 particulate tapes with varying orientation. The results for an anisotropy distribution are significantly different from a volume distribution and are in better agreement with the data. All distributions produce Sharrock type behavior for HCR(t), regardless of the distribution width. The model predicts that increasing the orientation distribution width will have very little effect on the fractional time dependence of HCR, in agreement with experiment which showed that SRχIRR/ and HCR(t) were essentially independent of orientation. Finally, the direct connection between SRχIRR/ and HCR(t) is confirmed theoretically and experimentally.