Rim has NOT 100% said that the patch is ok, as of now there are no known issues at this time and they will troubleshoot any issues with you if you have them.
BTW ill be installing it this weekend.
Just got this official email from them:
Hello,
Your Service Request has been logged and the following course of action has been
provided in response to your inquiry. If you have any questions concerning this request,
please reply to this email within the next three (3) business days.
Details:
TX1 - BESX - Question regarding Microsoft Critical Update - Security Patch MS09-003
Resolution:
Still testing with patch, but will continue to support if applied in environment.
Regards,
BlackBerry Customer Support
1-877-255-2377 (North America Toll Free)
0808 100 7466 (Toll Free UK Only)
+44 1753 558400 (Outside UK)
1-519-888-6181 (Worldwide)