Had a long and fruststrating day yesterday after installing SpB MS 3.5.4 on my TP2 . I've been avoiding installing as I was underwhelmed with the app on my Treo Pro. I thought with a newer OS and larger screen, maybe SpB MS would do better. I was sadly mistaken. When I first installed and launched the app all seemed to be well, then for no reason I can figure out, my TP2 went into a soft reset and froze on the HTC screen (white with green HTC). I tried everything but no response. I had to finally pull battery and then after reinstaling battery immediately do a hard reset or device would soft reset and freeze again. Thank goodness for Sprite Backup. Saved me hours of reconfiguring. I am disappointed, as SpB MS looks like a great app. I just can't take the chance of freezing my device as I use it for business constantly. I like Sense, just wanted to see something new. I'm not saying don't buy MS 3.5, just passing on my experience. I have several tweaks on my device that may not get along well with SpB MS but I want to keep those tweaks so goodbye MS.