I've upgraded to 6.2.19 since having big freezing problems but now it's not downloading any new Work Units for any of my projects. I've got 13 projects attached and the vast majority of them have plenty of WUs to send out and I've tried do network communication, the update button, synchronizing with BAM!, restarting boinc, restarting the computer. Everything I can think of. Is this an issue with the latest Boinc or is it just throwing a hissy fit.

Edit: It's also not acknowledging several completed WUs for a long time. I've only got uFluids left in my tasks list and it refuses to acknowledge. It's happened with SETI, QMC and GeneticLife.