Here is some information on the bugs that we are currently working on.

FIXING Now:

Fixing  "My Neighbors" tab times out when you have a lot of neighbors

Here are some recent bugs that were resolved:

Fixed The frog counters have been updated with a newer version

Fixed  Loading issues for some people, if you receive a Refresh/Support popup or a TLC image

Fixed  Buying a bundle (2-for-1) and receiving 2 male creatures
Fixed  Frog counters that have reset during the downtime

Fixed  When selling eggs in a Large "Big Tank", the sell button is cut off. Please zoom in to see the sell button.

Fixed  Server downtime - 04/21/2011 (unable to load the game, 504/503 errors)
Fixed Rainbow Nessie Expeditions do not fill up their crew
Fixed Treasure hunt check mark is hard to click (make sure to click on the lower portion of the button for now)

Fixed Refresh/Support popup when you try to accept the crate - This happens when you have overfilled tank 1 (bring it back to the allowed population limit and it'll be fine)
Fixed Frogs that changed color (please create a ticket if you have an issue on your account)
Fixed Bubble Clams disappearing / too many clams & chests
Fixed Snapshots won't publish
Fixed Mating popup says choose your "Frog" mate
Fixed Premium Idols missing - these are fixed now :)
Fixed Stackers appeared as though they weren't working
Fixed Gravel won't save
Fixed Some frogs will not cross-mate
Fixed Unable to mate 01/18/2010
Fixed Tanks getting renamed
Fixed Unable to load after purchasing the new wallpaper and gravel
Fixed Issues running the game 12/20, sold items returning, losing XP, items going back into rescue crates, etc.
Fixed Wallpapers being cut off in low/medium quality, Snapshot and in Full Screen view.
Fixed Issues resizing props
Fixed Adoption animals are different than the link indicates
Fixed Male Holiday Polar Bear is sometimes female
Fixed Successful Expedition popup does not display name
Fixed Yes/No buttons on Free Food acceptance don't work 
Fixed Fan Appreciation Event popup will not dismiss for some.
Fixed Seashell Temple cannot be moved all over the tank
Fixed Gap between wallpaper edges
Fixed Harold's tank does not load
Fixed An ad blocks part of the free gifts page
Fixed Kissing Fish will not mate
Fixed   Items placed on stackers move out of view.
Fixed  Problems with tapping on the glass (fish aren't moving
Fixed  Gravel not showing correctly in some tanks
Fixed  Successful mating causing Shockwave/browser crash
Fixed  Problems selling fish, mating fish, visiting neighbors (loading at 0%) and related.
Fixed  Tanks not loading items, showing black background and Back Soon boxes
Fixed  Premium gift sending
Fixed  Sending gifts to multiple friends is not possible, Send button is not available (will be fixed soon)
Fixed  Levelling up gives no notification or pearls
Fixed  Gap between wallpaper and gravel for some tanks 
Fixed  Frogs appear black when selling them
Fixed  Facebook Credits Friend store purchases (Pearls work fine)
 Fixed  Red/Purple Frogs do not mate when you don't have pearls
Fixed  Frogs appear white when selling them
Fixed  Platypuses from adoptions are female (should be male)
Fixed  Eggs prices are showing as higher than normal, appears as though coins are lost
Fixed   Fish aging at different rates
Fixed   Eggs aren't dropping as much as normal
Fixed  Adopted animals mate with Premium, and take Pearls when it says coins
Fixed  (Leaf) collection items aren't notifying you when you find one
Fixed  Green Sea Dragon is a male
Fixed  Halloween Cobweb & Spider free gift doesn't appear
Fixed Idols not counting down correctly when a Feeder was present
Fixed Camera not publishing to wall or photo album
Fixed Not receiving award for fossil collection (let us know if you didn't receive yours, and we'll add it)
Fixed Not receiving Leaf Collection items (only fossils)