R80.40 on 4000 series appliances

[D_TK]

Can i assume if a cluster is running R80.20 without perf issues, it should run 80.40 the same?  Not worried about our 4800s, but i have one 4400 (under 10 users, 20M MPLS port), and one 4600 (under 50 users, 50M port) still in production.  There will be no change in active blades.

Thanks.

[Jessie_Rich]

We have a pair of 4600's running r80.40 just fine, had crashing issues until the at the time latest ongoing take was installed, performance has be fine.