Droiddinho
Lurker
What else have you done to your phone? Just flashing a kernel/overclocking wouldn't cause you to lose your text messages. Also, force closes can be due to a lot of things. Did it not start until you overclocked? What are your hboot/radio/software versions? What kernel are you using, specifically (version, CFS/BFS, HAVS/noHAVS, SBC/noSBC)?
The forceclosing and erased text messages happened during the time I was flashing the new kernel/overclocking. The flashing process wasnt smooth, as I overclocked to 1190 and my phone kept rebooting itself until I managed to find enough time to uninstall setCPU in between reboots. I flashed about 3 different kernels in this time(the stock kernel that works with collin's battery tweak, and bfs#9). I also made the mistake of trying setCPU with collins battery tweak enabled, which caused my phone to get sluggish until I once again removed setCPU and disabled the battery tweak.
Now I'm using Froyo with Myns warm 2.2 RLS 5, Radio is 2.15.00.11.19, Kernel is 2.6.32.23 natas@64-bit-evil(the file was called netarchy-toastmod-4.2.1-cfs-bfq-havs-more-smartass-universal-signed)