I've been having the same problem on three gg servers since the last source update.
sm plugins list
[SM] Listing 65 plugins:
01 "Admin File Reader" (1.4.3) by AlliedModders LLC
02 "Admin Help" (1.4.3) by AlliedModders LLC
03 "Admin Menu" (1.4.3) by AlliedModders LLC
04 "Advertisements" (0.5.5) by Tsunami
05 "Anti-Flood" (1.4.3) by AlliedModders LLC
06 "Basic Chat" (1.4.3) by AlliedModders LLC
07 "Basic Comm Control" (1.4.3) by AlliedModders LLC
08 "Basic Commands" (1.4.3) by AlliedModders LLC
09 "Basic Info Triggers" (1.4.3) by AlliedModders LLC
10 "Basic Votes" (1.4.3) by AlliedModders LLC
11 "Client Preferences" (1.4.3) by AlliedModders LLC
12 "Custom Votes" (0.5.6) by chundo
13 "Fun Commands" (1.4.3) by AlliedModders LLC
14 "Fun Votes" (1.4.3) by AlliedModders LLC
15 "SM GunGame Buylevel" (1.1) by {cDS} Artsemis
16 "GunGame:SM" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
17 "GunGame:SM Afk Management" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
18 "GunGame:SM Bot Protection" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
19 "GunGame:SM Config Reader" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
20 "GunGame:SM Display Winner" (1.1.9.1) by bl4nk, Otstrel.ru Team
21 "GunGame:SM Winner Logger" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
22 "GunGame:SM Map Vote Starter" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
23 "GunGame:SM Stats" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
24 "GunGame:SM TK Management" (1.1.9.1) by teame06-hat, Liam, Otstrel.ru Team
25 "HLstatsX CE Ingame Plugin" (1.6.16) by psychonic
26 "KnifeSyphon" (1.
by bl4nk
27 "MapChooser" (1.4.3) by AlliedModders LLC
28 "Grenade Trails" (1.1) by Fredd
29 "Nextmap" (1.4.3) by AlliedModders LLC
30 "NoBlock" (1.4.2) by Otstrel.ru Team
31 "Map Nominations" (1.4.3) by AlliedModders LLC
32 "Observe Client" (1.2.3) by WhiteWolf, puopjik, psychonic
33 "PermaMute" (0.1) by Ryan "FLOOR_MASTER" Mannion
34 "Player Commands" (1.4.3) by AlliedModders LLC
35 "Players Votes" (1.5.0) by The Resident, pZv!
36 "Quake Sounds" (2.7.1) by dalto, Grrrrrrrrrrrrrrrrrrr, and psychonic
37 "Radio Spam Block" (1.0.0) by exvel
38 "Reserved Slots" (1.4.3) by AlliedModders LLC
39 "Rock The Vote" (1.4.3) by AlliedModders LLC
40 "Server Clean Up" (1.1.7) by Jamster
41 "Show Damage" (1.0.7) by exvel
42 "SourceMod Anti-Cheat" (0.7.9.3) by GoD-Tony, psychonic
43 "SMAC Aimbot Detector" (0.7.9.3) by GoD-Tony
44 "SMAC AutoTrigger Detector" (0.7.9.3) by GoD-Tony
45 "SMAC Client Protection" (0.7.9.3) by GoD-Tony, psychonic, Kigen
46 "SMAC Command Monitor" (0.8.0.0) by GoD-Tony, psychonic, Kigen
47 "SMAC ConVar Checker" (0.7.9.3) by GoD-Tony, psychonic, Kigen
48 "SMAC Eye Angle Test" (0.7.9.3) by GoD-Tony, psychonic
49 "SMAC Rcon Locker" (0.7.9.3) by GoD-Tony, Kigen
50 "SMAC Anti-Speedhack" (0.7.9.3) by GoD-Tony
51 "DeathMatch:SM" (1.6.1) by Otstrel.ru Team, TigerOx, TechKnow
52 "DeathMatch:SM Elimination" (1.6.1) by Otstrel.ru Team, TigerOx, TechKnow
53 "DeathMatch:SM Ragdoll Remover" (1.6.1) by Otstrel.ru Team, TigerOx, TechKnow
54 "DeathMatch:SM Spawn Protection" (1.6.1) by Otstrel.ru Team, TigerOx, TechKnow
55 "DeathMatch:SM Preset Spawns" (1.6.1) by Otstrel.ru Team, TigerOx, TechKnow
56 "DeathMatch:SM Weapons Remover" (1.6.1) by Otstrel.ru Team, TigerOx, TechKnow
57 "Scoreboard Block" (1.0) by Otstrel.ru Team
58 "SM SKINCHOOSER" (2.2) by Andi67
59 "Team Balance" (1.2) by Otstrel.ru Team
60 "StickyNades Lite" (1.2.6) by TigerOx, Tsunami
61 "Sound Commands" (1.4.3) by AlliedModders LLC
62 "SourceBans" (1.4.9) by SourceBans Development Team
63 "SuperLogs: CSS" (1.2.4) by psychonic
64 "Updater" (1.1.5) by GoD-Tony
65 "Very Basic High Ping Kicker" (1.4) by msleeper