I just had an issue where my EBay would not proceed to checkout. I tried on two browsers (Chrome, Explorer on Win 8.1) and I did a CCleaner; so I looked to see if anyone else had experienced this issue. I found the issue, from an Admin CMD ipconfig /flushdns
Worked beautifully.
Honestly this is the first time I've ever had to do this, I'm not entirely certain what it is, and I don't think I need to - but is a DNS Flush a good potential option for CCleaner?