You got your reply... The new kernel is either buggy, or some other package in your distro needs to be recompiled for it (Mesa would be the first suspect).
The absence of the first warning (texture caching failure) could be the sign that your new kernel also had issues with file systems (in excess of the OpenGL crash bug it caused)...
This is usually the sign of a flacky or congested network, but this is not always something you can solve at your side (a bad ISP, or a congested route to the host sims could explain it as well); still, verify your network device/connection.
E.g. for an Ethernet connection, check for dropped packets or errors on the interface:
ifconfig, or its equivalent for your distro, would tell you so in the interface stats numbers (and this would be the sign of a bad Ethernet connector or cable).
For a WiFi connection, it could be caused by a bad radio transmission between your PC and the WiFi router: try and move the antennas or the router itself; a "direct view" from your PC is best, of course, or as direct as it can be, with the minimum number of obstacles (walls). WiFi radio waves also got the bad habit to reflect on surfaces (e.g. doors) and inhabitants, and may cause
fading as a result when the reflection interferes with the waves which followed another path (
multi-path propagation interferences)... Due to the short wave length of WiFi radio signals, moving the antennas by only a few decimeters may suffice to improve the communications quality.