No problem for me on a slightly older (about 2 years old) MBP with Mavericks (10.9).
On Wed, Dec 4, 2013, Tom Bulat <[email protected]> wrote: >Mac OS X version: Mac OS X 10.6 > >I have been having an issue on my laptop, a newer MacBook Pro that is >running Mavericks. > >Don't know why, but all of a sudden I was experiencing hangs galore. So I >upgraded to the beta "PowerMail pm6.2b5" and got things working, but today I >was notified of the upgrade to "PowerMail 6.2.1 build 4668", and because >"PowerMail 6.2.1 build 4668" appeared to be working fine on my desktop iMac >(same ISP and network), I let it install, and now it's back to downloading >mail, but then not making any progress, just the spinning beach ball, and >then I have to force quit. This is very unusual behavior. Any suggestions or >help would be appreciated. > >Thanks, and so long for now, TOM > > > >

