Hi spektro,
first of all, thx for this wonderfull app!!
I have a small problem.
I have an iPhone 3GS and just JB with Geohotz' purplera1n (went flawless).. So I managed to get Cydia and of course I installed iBlacklist immediatly (since I had it on my iPhone 3G with OS3.0 working flawlessly
Anyway, as extra information, I've also installed Intelliscreen.
Everything seems to be working fine, for one small thing...
I have a contact in my blacklist, the blacklist is active.
The call settings are: Voicemail.
I have Save History and Delete Recent Calls on, nothing else.
Within Intelliscreen, I have totally disabled IntelliAlerts.
Now, whenever I get a call from a contact on the blacklist (I've been testing it with the phone here at work

), my phone activates (from being locked) and shows for 1 second that the number is calling me, before disconnecting and the screen going black again. When I slide-to-unlock, I see a badge on phone.app stating 1 (missed call), when I go into the phone.app to Recents tab, there is the 1 on the Recents tab button, but no recent missed phonecalls to be seen... so it is nicely cleaned by iblacklist, but just a tad too late I guess...
I hope you have enough information to solve this minor glitch?
I wasn't able to test it with receiving texting, but sending a text message works perfect.