Ya, mine was freezing. My 3ds was always connecting to the internet so I didn't think I had to open the browser. Don't get me wrong, I tried to open the browser quite a few times but it always froze before I could even load a page.
I tried disabling the the wifi before I booted the cfw and then enable it after the cfw booted....that didn't work.
I kept getting the update nag as soon as I booted into the cfw and I always had to clear the nag before I ran ctrclient...but it never worked.
Then I got the idea that this nag was interfering with the connection to ctrclient on the 3ds end, so popped out the sd card and formatted sysnand. Recreated my profile, and connection settings. Inserted the sd and loaded the exploit. As soon as the cfw rebooted, I saw that the nag was gone.
I ran ctrclient and it worked...
I had originally created the partition on a 2 gig card, leaving only 1 gig for cia's. This was not enough so i went and bought a new 32 gig sd. I didn't realize at the time you could just copy the disk image over so I just ran format emunand again and reinserted my patched rednand. I then copied the contents from the old sd to the new sd. To install the devmenu I figured I had to run ctrclient once again. I ran the ctrclient and it worked first try again. I didn't receive the proper response code but devmenu did start working after that. Not entirely sure what happened but whatever, devmenu is working on my 32 gig sd.
These are the only 2 times that ctrclient connected and worked out of all the times I ran it and I ran it a lot...now that I think of it, those 2 times were the last 2 times I ran it.
If your 3ds is connecting to the internet without loading the browser, I wouldn't bother with it. Only if the internet won't connect automatically after the reboot would I try opening the browser....but im not sure why people are even having that issue. Mine always connected to the internet right after the reboot. Anytime I tried loading the browser it ended in failure and was just another hard reset that I really got sick of doing, so I stopped trying to open the browser..
Just keep trying.....