Get yourself a peak-detection charger. It will generally save you the problems of:
long charge times
unable to detect when battery is done/in progress of charging.
overcharge
undercharge.

Get one and charge your battery at 3-4 amps (3.3 is the sweet spot). This will let it charge faster, and they usually tell you if there was an error, if its in progress of charging, and when its done. (by screen or a single LED). Some more advanced chargers can charge LiPo, tell you how much voltage and mAh is in the battery, and so on.

Heres a good, cheap, efficent charger that gets the job done.:
www3.towerhobbies.com/cgi-bin/wti0001p
or
www3.towerhobbies.com/cgi-bin/wti0001p

If you're looking for more peformance, get one of these:
www3.towerhobbies.com/cgi-bin/wti0001p
hobbyking.com/hobbycity/store/uh_viewItem.asp