Can't upload files > 10Mb

[Cliff Wells]

I've got an app that I upload CSV files to.  So far it's worked
flawlessly until yesterday.  The CSV files have gotten progressively
larger and yesterday they broke 10Mb.  At this point Nginx logs an error
that says:

[error] 6610#0: *67 client intended to send too large body: 11226223
bytes

I've got this in my nginx.conf:

client_max_body_size    150m;

What other parameters might affect this?

I tested with 0.6.29 and 0.6.31.

Cliff