Starting with that version I experienced those errors when I reboot my machine (Gentoo Linux x86. It is fully enough stop and start BOINC - but I'm wondering if the culprit is BOINC or the project ?

Sun 09 Feb 2014 04:21:57 PM CET | | Starting BOINC client version 7.2.41 for i686-pc-linux-gnu
Sun 09 Feb 2014 04:21:57 PM CET | | log flags: file_xfer, sched_ops, task, cpu_sched
Sun 09 Feb 2014 04:21:57 PM CET | | Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8
Sun 09 Feb 2014 04:21:57 PM CET | | Running as a daemon
Sun 09 Feb 2014 04:21:57 PM CET | | Data directory: /var/lib/boinc
Sun 09 Feb 2014 04:21:57 PM CET | | No usable GPUs found
Sun 09 Feb 2014 04:21:57 PM CET | | Host name: n22
Sun 09 Feb 2014 04:21:57 PM CET | | Processor: 4 GenuineIntel Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz [Family 6 Model 42 Stepping 7]
Sun 09 Feb 2014 04:21:57 PM CET | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
Sun 09 Feb 2014 04:21:57 PM CET | | OS: Linux: 3.12.10
Sun 09 Feb 2014 04:21:57 PM CET | | Memory: 7.79 GB physical, 9.32 GB virtual
Sun 09 Feb 2014 04:21:57 PM CET | | Disk: 179.54 GB total, 141.67 GB free
Sun 09 Feb 2014 04:21:57 PM CET | | Local time is UTC +1 hours
Sun 09 Feb 2014 04:21:57 PM CET | Einstein@Home | URL http://einstein.phys.uwm.edu/; Computer ID 1642958; resource share 100
Sun 09 Feb 2014 04:21:57 PM CET | Asteroids@home | URL http://asteroidsathome.net/boinc/; Computer ID 14830; resource share 100
Sun 09 Feb 2014 04:21:57 PM CET | World Community Grid | URL http://www.worldcommunitygrid.org/; Computer ID 1986959; resource share 100
Sun 09 Feb 2014 04:21:57 PM CET | World Community Grid | General prefs: from World Community Grid (last modified 26-Oct-2010 22:28:15)
Sun 09 Feb 2014 04:21:57 PM CET | World Community Grid | Host location: none
Sun 09 Feb 2014 04:21:57 PM CET | World Community Grid | General prefs: using your defaults
Sun 09 Feb 2014 04:21:57 PM CET | | Reading preferences override file
Sun 09 Feb 2014 04:21:57 PM CET | | Preferences:
Sun 09 Feb 2014 04:21:57 PM CET | | max memory usage when active: 3990.94MB
Sun 09 Feb 2014 04:21:57 PM CET | | max memory usage when idle: 7183.69MB
Sun 09 Feb 2014 04:21:57 PM CET | | max disk usage: 145.18GB
Sun 09 Feb 2014 04:21:57 PM CET | | (to change preferences, visit a project web site or select Preferences in the Manager)
Sun 09 Feb 2014 04:21:57 PM CET | | gui_rpc_auth.cfg is empty - no GUI RPC password protection
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/wcg_rice_6.17_i686-pc-linux-gnu: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/rice_image05_6.17.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/wcg_rice_graphics_6.17_i686-pc-linux-gnu: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/rice_image02_6.17.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/rice_image01_6.17.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/rice_image04_6.17.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/rice_image03_6.17.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/rice_text01_6.17.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/wcg_flu1_autodock_6.04_i686-pc-linux-gnu: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/wcg_flu1_autodock_graphics_6.04_i686-pc-linux-gnu: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Resetting file projects/www.worldcommunitygrid.org/hfcc_text01_6.04.tga: RSA key check failed for file
Sun 09 Feb 2014 04:21:57 PM CET | | Not using a proxy
Sun 09 Feb 2014 04:22:00 PM CET | Einstein@Home | [cpu_sched] Restarting task h1_0918.50_S6Directed__S6CasAf40a_918.7Hz_1099_1 using einstein_S6CasA version 105 (SSE2) in slot 4
Sun 09 Feb 2014 04:22:00 PM CET | World Community Grid | [cpu_sched] Restarting task MCM1_0002006_9125_1 using mcm1 version 728 in slot 1
Sun 09 Feb 2014 04:22:00 PM CET | Asteroids@home | [cpu_sched] Restarting task ps_140207_11347_23_0 using period_search version 10210 (avx) in slot 0
Sun 09 Feb 2014 04:22:00 PM CET | Asteroids@home | [cpu_sched] Restarting task ps_140207_11348_1_0 using period_search version 10210 (avx) in slot 2
Sun 09 Feb 2014 04:22:01 PM CET | World Community Grid | Started download of wcg_rice_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:01 PM CET | World Community Grid | Started download of rice_image05_6.17.tga
Sun 09 Feb 2014 04:22:06 PM CET | World Community Grid | Finished download of wcg_rice_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:06 PM CET | World Community Grid | Started download of wcg_rice_graphics_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:06 PM CET | World Community Grid | [error] Signature verification error for wcg_rice_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:06 PM CET | World Community Grid | [error] Checksum or signature error for wcg_rice_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | Finished download of rice_image05_6.17.tga
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | Finished download of wcg_rice_graphics_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | Started download of rice_image02_6.17.tga
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | Started download of rice_image01_6.17.tga
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | [error] Signature verification error for rice_image05_6.17.tga
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | [error] Checksum or signature error for rice_image05_6.17.tga
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | [error] Signature verification error for wcg_rice_graphics_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:11 PM CET | World Community Grid | [error] Checksum or signature error for wcg_rice_graphics_6.17_i686-pc-linux-gnu
Sun 09 Feb 2014 04:22:12 PM CET | World Community Grid | Finished download of rice_image02_6.17.tga
Sun 09 Feb 2014 04:22:12 PM CET | World Community Grid | Started download of rice_image04_6.17.tga
Sun 09 Feb 2014 04:22:12 PM CET | World Community Grid | [error] Signature verification error for rice_image02_6.17.tga