when that happen i just restart my phone all better.

My gps used to suck big time when i was using the trial papago x5. It was laggy and took ages to lock in. It always went off the road when I turned etc. It was so bad that I thougt it was my sgs fault. However, when I used another version of papago x5, it is now dead accurate. Locks in within seconds. And tracking is dead accurate (unbelievably precise) and doesnt go off track at all when I make a turn. I just upgraded to DXJPA yesterday and now I notice it can even lock in indoors. When I was using 2.1, it couldnt lock in when indoor (my htc wildfire can lock in indoor, too).

Whn I was using trial papago, I had problem locking in, too. I tested wth gps status n it took ages to lock in. Even whn lock in the tracking was laggy n off. I cant explain why whn I change papago version everything falls into place. It is so perfect now, I was reluctant to upgrade to froyo as I was worried it would screw up again. Now, wth froyo, it can detect even indoor. The only thing I did previously was dl gps optimization for sgs fr android market. But I dont think that help, as it was still temperamental then. Hwever, 3 days ago when I was doing some test indoor, I found tht if u switch on gps status app fr (android market), it strengthen the signal so much so tht I can detect signal whn indoors ( evn whn I was eclair then).

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Added on December 4, 2010, 10:23 am
Ken, sorry for noob question. After u flash to k10e 256, wht do u do? How do u optimise? Or it does by itself? Sorry, I m learning. I just flash to k9a 256.

I read somewhere before that iOS revenue strategy is different from Android. iOS apps revenue base has to be from consumers paying/buying whilst for Android it is based on ads revenue, means the more ppl use your apps, the more ads you sell and the more revenue you got. In simple terms, the ads money will help pay the developer. Some developer don't want ads revenue so they can still opt to sell it direct. After all, Google own revenue base is selling ads..

Anyhow, I see there are pro and cons for both type of system. The good thing for Android is, consumers at least got to choose which one to go.... Now this reminds me of the funny comic posted by freakfingers a few pages back.. 
If you use wireless/network, can it detect your position? I see majority SGS users don't have this GPS problem here.

Maybe it is hardware related somehow... Still under warranty? 

mine is working now...here is what i did...why dun u test and see how..

1) go to settings>location and security>use wireless networks off..use gps satelites on and use sensor aiding on..
2) go to dialpad and key in *#*#3214789650#*#* to enter LBS test mode.
3) application settings: tracking, s/w test, standalone, hot start, gps plus on, dynamic accuracy on, accuracy 50,gps logging off..
4)SUPL/CP settings: AUTO Config, SUPL secure socket on, agps mode SUPL..
5)press back out to homescreen and reboot...
6) go back to settings>location and security>switch back on use wireless networks...try go out and test ur gps now..should lock ard 10-20secs or faster...

I put accuracy 30. Read somewhere that 30 is a good no. hehehe 

btw, my settings abit different; SUPL/CP settings: Custom confiq, SUPL secure socket off. The rest all the same

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Added on December 7, 2010, 12:04 amLook like hardcore has stopped his update frenzy..