Currently Being ModeratedSep 4, 2011 1:49 PM (in response to GoldenSun136)
See if the site is listed at Settings > Safari > Databases.
If not, and you're willing to take a risk, try going to Settings > Safari > Autofill > Names and Passwords and turn this feature off and then back on again. If that doesn't work, you might have to Clear All and then start from scratch with all sites.
Currently Being ModeratedSep 4, 2011 1:54 PM (in response to AdamKB)
I deleted all Databases, I cleared all, I turned the option off / on. Nothing helped, I am not prompted anymore on this specific website
Currently Being ModeratedSep 17, 2011 2:15 AM (in response to GoldenSun136)
I found the reason. It was because I always entered this site via a bookmark. When deleting the bookmark and opening the site manually it works fine. It also worked to create a new bookmark.
So this issue is solved, it depended on the bookmark.