Is lead partition routing working for you? Not for us.
UPDATE: Per MJ's reply below, this is not an ABM issue. It's just a coincidence that this issue surfaced the same time ABM was deployed today.
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A couple hours ago, I email support in that - all of a sudden - we can't route leads to country lead partitions. We have 23 of them. This is absolutely critical for our working environment. I then tried to modify my support case by letting them know I ran more tests (no matter what I do - create new leads, edit existing ones, we cannot re-assign lead partitions), and now I see that I can't even access the Support portal:

About 15 minutes ago, I also received a message that Marketo ABM was turned on in our instance. Not sure if this is related or just coincidental.
Mahesh Jeswani