When I use my program for back link search sometimes, especially yahoo returns me 999 error. Especially from my work. When I tried enetr query straight to web browser it returns the same error (with some description this is ionly temporary error and etc.). Query string is OK, because later it functions with the same query without problems. At last the same error return altavista and alltheweb too. It is because they are gainig results from yahoo, i think. Do you have the same problems with yahoo, or it is problem somewhere here in my work network (maybe a lot of hits from work proxy servers...)