I use a Nokia N73 mobile handset and after few weeks of usage, sending an sms started taking a lot of time (over a minute) and the handset used to hang until the sms was sent. Time to send an sms kept on increasing after every sms sent. Finally when it became unbearable (over 4 minutes to send an sms), I googled for this problem and found out it’s a bug which exists in Nokia N73, N80 and E61 handsets. Nokia has released a patch for this bug called Nokia SMS Accelerator. However, when I tried to download and install the patch directly from my handset, it did not work for me. Finally, I downloaded the patch on my PC first, connected my handset to my PC, and installed the patch from my PC to my handset using the Nokia PC Suite. The patch fixed this problem and now it only takes about 5 seconds to send an sms. You can download the patch for Nokia N73 from here, for N80 from here and for E61 from here.
Cheers,
Raj
~~~ CODING FOR ETERNITY !!! ~~~