Absolutely - both of my gmail accounts are unable to send or recieve all day today via POP, from three different machines, both in OS X and in Windows XP.
This started this week and has become worse every day until today when the only way to send /rcv is to use the web gmail.
I can't put up with this and am now looking for another mail provider. Google just doesn't seem to have any repsonse or much interest in resolving this.