When installing a new printer via cups's web interface, the process blocks with an error message close to 'can't get driver list'. At the same time, cupsd and foomatic processes consume 25% CPU resources each. This is reproducible on two different hosts.
Downgrading cups and/or cups-filters yields the same result.
Some printers stop working with the error message 'filter failed'.
Cups seems broken since last upgrade (today on one host, 2 or 3 weeks before on the second host).
Please consider a fix.