So the PalmPre seems to have a small problem with vCards? Pwn20wn Nils found a nice little bug that seems to be exploitable. Nice find!
Then we got the first Android trojan that sends premium SMS messages. Jon did a nice decode of the trojan over here.
Since this is now on a public website I want to mention it once: Decrypting GSM phone calls by Karsten and other from the Security Research Labs (Berlin)