Comment 76 for bug 349314

@MITFAGWTF: no, you should only download and install *_2.6.28-11.43~lp349314apw5_*.deb from there. The *_2.6.28-11.38lp349314apw1_*.deb which are also there are an older version, which does not have any bugfixes from the last few Ubuntu kernel releases and uses an earlier version of the bugfix for this bug (the one which is supposed to have caused regressions on some systems).

If you tried to install both with "dpkg -i *.deb", you might have one or the other (both sets install the same packages, and thus each one replaces the other). Check which one you are currently using with "uname -a"; if it is already the latest one, you just downloaded and installed twice as much as you actually needed. If not, install the correct one and reboot.