lock cylinder issues

["Adam <acprice1@xxxx>" <acprice1@xxxx>]

My drivers side lock cylinder is messed up somehow. The key used to 
go in and out perfectly, but last weekend I found that it resists key 
entry and then trys to hold the key in. I have to jiggle it around 
while pushing or pulling to get it to work. Anyone dealt with this 
before?

thanks,
Adam