No problems here either. I think when Freestyle first started offering the kits, there were problems with poorly sealed bottles. In any case, even if nothing leaks, check the Part C of the developer. If it's dark or black, it's bad.
Dump the stabilizer. Not only do they give you too little, but it leaves gummy spots when drying (my experience mixing with distilled water). Kodak Final Rinse is ten dollars or so for enough concentrate to make ten liters. Totally fuss free -- super clean negatives and the concentrate lasts indefinitely.