My maxcoin-qt (Linux, 9.2.1) was working fine for about 12 hours but hasn't sync'ed since block 610003, about an hour ago (the wallet currently estimates we're at block 610142 and has 11 active connections).  

I've been paid by 1gh.com during this time, but my wallet isn't showing it.

*edit*: OK, trying resetcheckpoint/getcheckpoint and letting the wallet re-sync...
*edit again* yep, resetcheckpoint/getcheckpoint and letting the wallet re-sync worked.  It is once again current and up-to-date.

Wonder why it froze up at block 610003 like that?